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Complete a campaign mission or a match of multiplayer.
Kill 100 enemies or players.
Halo: Reach: Find the hidden binary signature.
Kill 100 Grunts.
Complete 10 missions or multiplayer games.
Kill 100 Elites.
Halo: Reach: Complete Winter Contingency.
Kill 100 Jackals.
Collect 500 campaign or playlist medals.
Halo CE: Complete The Pillar of Autumn.
Halo: Reach: Complete ONI: Sword Base.
Get killed by the Guardians.
Halo CE: Fight alongside Chips Dubbo and listen to his words of wisdom.
Play a multiplayer or co-op game at least 3 months after your first game.
Halo: Reach: Complete Nightfall.
Halo CE: Complete Halo.
Halo: Reach: Observe the logo of a buttoned-up mining company.
Collect 1,000 campaign or playlist medals.
Complete any co-op level on Normal difficulty.
Kill 100 Brutes.
Halo: Reach: Complete Tip of the Spear.
Kill a 343 developer in matchmaking or someone who has this achievement.
Kill 100 Flood.
Halo CE: Complete The Truth and Reconciliation.
Halo: Reach: Complete Long Night of Solace.
Kill 1000 Grunts.
Halo: Reach: Complete Exodus.
Halo CE: Complete The Silent Cartographer.
Halo: Reach: Find me in the club.
Halo 3: Fight alongside and listen to The Man. The Legend. Chips Dubbo.
Halo: Reach: Complete New Alexandria.
Halo: Reach: Find and eliminate one of the hidden Ranger Commander Elites.
Halo 2: Fight alongside the legendary Chips Dubbo and listen to his words.
Halo: Reach: Kill the Elite Zealot before he can escape during Tip of the Spear.
Complete 50 missions or multiplayer games.
Halo: Reach: Complete The Package.
Halo 2: Complete Cairo Station.
Complete any co-op level on Heroic difficulty.
Halo: Reach: Complete The Pillar of Autumn.
Halo CE: Complete Assault on the Control Room.
Collect 2,000 campaign or playlist medals.
Halo: Reach: Access hidden UNSC radio chatter.
Halo 3: Complete Sierra 117.
Halo 2: Fly the Heretic Banshee.
Halo 2: Complete Outskirts.
Halo CE: Complete 343 Guilty Spark.
Halo 2: Complete Metropolis.
Halo: Reach: Complete every level of the game on Easy difficulty.
Halo: Reach: Kill 3 of the anti-aircraft batteries during New Alexandria.
Halo CE: Complete The Library.
Halo 3: Complete Crow's Nest.
Halo CE: Activate Terminal 2 on Halo.
Halo 2: Complete The Arbiter.
Kill 5,000 enemies or players.
Halo 3: Complete Tsavo Highway.
Halo CE: Complete Two Betrayals.
Halo CE: Complete Keyes.
Halo: Reach: Complete every level of the game on Normal difficulty.
Halo 3: Complete The Storm.
Halo CE: Complete The Maw.
Collect 3,000 campaign or playlist medals.
Halo 2: Complete The Oracle.
Halo 4: Complete Dawn.
Halo 3: Complete Floodgate.
Halo 2: Complete Delta Halo.
Halo CE: Activate Terminal 3 on The Truth and Reconciliation.
Halo 2: Kill an enraged, berserk Brute using melee.
Halo 3: Complete The Ark.
Halo 2: Complete Regret.
Kill 1000 Flood.
H3: ODST: Find the 1st clue to unraveling the mystery.
H3: ODST: I've got my eye on you, Marine.
Halo: Reach: Hear a familiar voice on New Alexandria.
Kill 50 Hunters.
Halo CE: Complete every level of the game on Easy difficulty.
Halo: Reach: Now that's a value meal.
Halo 2: Complete Sacred Icon.
Halo 3: Complete The Covenant.
Complete any co-op level on Legendary difficulty.
Halo 3: Complete Halo.
Win 10 multiplayer games.
Halo 2: Complete Quarantine Zone.
Halo 3: Complete Cortana.
Halo 2: Complete Gravemind.
Halo 2: Beat the par score on Metropolis.
Halo 4: Complete Requiem.
H3: ODST: Complete Tayari Plaza.
Collect 4,000 campaign or playlist medals.
Halo 2: Complete High Charity.
Halo 2: Complete The Great Journey.
Halo: Reach: Trigger a humorous callout on your HUD's position indicator.
Halo CE: Complete every level of the game on Normal difficulty.
Complete 100 missions or multiplayer games.
Halo 2: Complete Uprising.
H3: ODST: Find the 2nd clue to unraveling the mystery.
H3: ODST: Find the 1st Audio Log.
H3: ODST: Complete Uplift Reserve.
Halo 3: Complete every level of the game on Easy difficulty.
Halo 2: Drive a Scorpion while playing as the Arbiter.
Halo 4: Complete Forerunner.
Kill 100 Crawlers.
H3: ODST: Earn a Triple Kill medal with the pistol on any level.
Kill 1000 Jackals.
Halo CE: Activate Terminal 4 on The Silent Cartographer.
Halo CE: Beat the par time on The Pillar of Autumn.
H3: ODST: Find the 2nd Audio Log.
Halo 4: Complete Infinity.
Kill 1000 Elites.
Halo: Reach: Play a game of Halo: Reach on the 14th of any month.
H3: ODST: Find the 3rd clue unraveling the mystery.
H3: ODST: Complete Kizingo Blvd.
Collect 5,000 campaign or playlist medals.
Halo 2: Complete every level of the game on Easy difficulty.
Halo 3: Complete every level of the game on Normal difficulty.
H3: ODST: Complete ONI Alpha Site.
H3: ODST: Find the 4th clue unraveling the mystery.
H3: ODST: Complete any level without activating VISR mode.
Halo: Reach: Beat the par score on Nightfall.
Halo: Reach: Kill 100 Skirmishers.
Halo 4: Complete Reclaimer.
Halo CE: Complete The Truth and Reconciliation with at least four rounds left in your Sniper Rifle.
H3: ODST: Complete NMPD HQ.
H3: ODST: Find the 3rd Audio Log.
H3: ODST: Find the 5th clue unraveling the mystery.
Halo 4: Complete Shutdown.
H3: ODST: Find the 6th clue unraveling the mystery.
H3: ODST: Complete Kikowani Station.
Halo 4: Complete Composer.
H3: ODST: Complete Data Hive.
Halo 2: Complete any campaign level without dying on Normal or harder.
H3: ODST: Complete Coastal Highway.
Halo 2: Complete every level of the game on Normal difficulty.
Halo 4: Complete Midnight.
Halo CE: Kill a Hunter with one pistol round.
H3: ODST: Find the 4th Audio Log.
Complete 150 missions or multiplayer games.
Collect 6,000 campaign or playlist medals.
Halo 2: Activate Terminal 6 on Delta Halo.
H3: ODST: Complete every level of the game on Easy difficulty.
Halo 2A MP: Kill an opponent that has the Ninja Redux achievement in Anniversary matchmaking.
H3: ODST: Complete any level without using Covenant weapons.
Halo 2: Activate Terminal 5 on The Oracle.
Halo 2: Activate Terminal 9 on Quarantine Zone.
Halo 4: Beat the par score on Infinity.
Halo 4: Complete every level of the game on Easy difficulty.
Halo CE: Play Halo: CE on the 15th of any month.
Halo 2: Activate Terminal 3 on Metropolis.
H3: ODST: Find the 5th Audio Log.
Kill 10 Engineers.
Halo CE: Complete any level on Heroic difficulty or higher without taking health damage.
Kill 1000 Brutes.
Halo: Reach: Complete a Firefight set on Normal or Harder.
Halo 3: Complete a match on at least 8 different multiplayer maps.
H3: ODST: Complete every level of the game on Normal difficulty.
Halo: Reach: Destroy the Corvette's engines & escort in under 3 minutes during Long Night of Solace
Halo 2: Beat the par score on Delta Halo.
Halo: Reach: Complete every level of the game on Heroic difficulty.
Halo 2: Beat the par score on The Arbiter.
Halo 3: Beat the par time on Floodgate.
Halo 4: Activate Terminal 2 on Forerunner.
Kill 100 Knights.
Halo 2A MP: Kill an opponent that has the Legendary Anniversary achievement.
Halo 3: Play a game of Halo 3 on the 25th of any month.
Collect 7,000 campaign or playlist medals.
Halo 2 MP: In Classic or Anniversary matchmaking, stop the killing spree of another player.
Halo: Reach: Kill 2 vehicles at once with the Target Locator during ONI: Sword Base.
H3: ODST: Find the 6th Audio Log.
Halo: Reach: Beat the par score on ONI: Sword Base.
Halo CE: Activate Terminal 10 on The Maw.
Halo 2A MP: Get awarded at least 10 different medals in one multiplayer game.
Halo 4: Complete every level of the game on Normal difficulty.
Halo 3: Beat the par time on Tsavo Highway.
Complete 200 missions or multiplayer games.
Halo 2: Activate Terminal 11 on Uprising.
Halo 2: Play a game of Halo 2 Anniversary on the 9th of any month.
Halo: Reach: Beat the par score on New Alexandria.
Halo CE: Complete every level of the game having seen it in both classic and remastered mode.
Halo: Reach: Hijack a Banshee during the Reach Campaign.
Halo 2: Activate Terminal 4 on The Arbiter.
H3: ODST: Find the 7th Audio Log.
Halo: Reach: Beat the par score on The Pillar of Autumn.
Halo 4: Access the Master Chief's records on Dawn.
Collect 8,000 campaign or playlist medals.
Halo: Reach: Find Data Pad on 1 Winter Contingency
Halo CE: Complete every level of the game on Heroic difficulty.
Win 50 multiplayer games.
H3: ODST: Beat the par score on Kizingo Blvd.
Halo: Reach: Beat the par time on Long Night of Solace.
Halo 2: Beat the par score on The Great Journey.
Halo 3: Beat the par score on The Ark.
H3: ODST: Kill 4 enemies with a single plasma or frag grenade.
Halo 2A MP: In Anniversary multiplayer, receive 2 or more Double Kill medals.
H3: ODST: Beat the par score on Data Hive.
Halo 2: Beat the par time on Cairo Station.
Complete 250 missions or multiplayer games.
Halo 2: Activate Terminal 7 on Regret.
Halo: Reach: Beat the par score on Long Night of Solace.
Halo 2: Beat the par time on High Charity.
Halo: Reach: Observe a grizzly scene on New Alexandria.
Halo 3: Beat the par score on The Covenant.
Halo 3: Complete every level of the game on Heroic difficulty.
Halo 4: Beat the par score on Composer.
H3: ODST: Find the 8th Audio Log.
Halo 3: Beat the par score on Sierra 117.
Halo 3: Complete a match on at least 4 different game types in multiplayer.
Collect 9,000 campaign or playlist medals.
Halo 4: Activate Terminal 4 on Reclaimer.
Halo 2: Activate Terminal 2 on Outskirts.
Halo 2: Activate Terminal 13 on The Great Journey.
H3: ODST: Beat the par time on Data Hive.
Halo CE: Storm The Silent Cartographer beach with no Marine casualties on Heroic or Legendary.
Halo 4: Complete a Spartan Ops mission.
Halo 4: Play a game of Halo 4 on the 6th of any month.
Halo 2: Complete every level of Halo 2 having seen it in both classic and remastered mode.
Halo 3: Find and claim the Blind Skull on Normal or harder.
Complete 300 missions or multiplayer games.
Halo 3: Beat the par score on Tsavo Highway.
Halo 4: Activate Terminal 3 on Infinity.
Complete all campaigns on Easy difficulty.
Halo 2: Kill 7 opponents from behind in a row without being spotted.
Halo: Reach: Beat the par score on Winter Contingency.
Halo 4: Beat the par time on Dawn.
H3: ODST: Find the 9th Audio Log.
Collect 10,000 campaign or playlist medals.
Halo: Reach: Kill 10 enemies while using a Jetpack.
Halo 2A MP: With a Sniper Rifle or Beam Rifle kill an enemy that was zoomed in.
Halo CE: Activate Terminal 9 on Keyes.
H3: ODST: Complete any level without using a health pack on Heroic or Legendary.
Halo CE: Activate Terminal 5 on Assault on the Control Room.
Halo 2: Beat the par score on Outskirts.
Halo 2: Activate Terminal 10 on Gravemind.
Halo 3: Find and claim the Black Eye Skull on Normal or harder.
Halo 3: Beat the par score on Crow's Nest.
H3: ODST: Complete every level of the game on Heroic difficulty.
Halo CE: Activate Terminal 8 on Two Betrayals.
Halo 3: Beat the par score on The Storm.
Halo 4: Complete a match on at least 8 different multiplayer maps.
Halo: Reach: Headshot 10 enemies while they are sprinting.
Halo CE: Activate Terminal 1 on The Pillar of Autumn.
Halo CE: Find and claim the Foreign skull in remastered mode.
Halo CE: Find and claim the Mythic skull in remastered mode.
Complete 350 missions or multiplayer games.
Halo CE: Beat the par score on The Pillar of Autumn.
Complete all campaigns on Normal difficulty.
Halo: Reach: Complete 10 assassinations on enemy players.
Halo CE: Beat the par score on The Library.
Halo CE: Find and claim the Famine skull in remastered mode.
Kill 20,000 enemies or players.
Halo 2: Complete every level of the game on Heroic difficulty.
H3: ODST: Find the 10th Audio Log.
Halo: Reach: Complete every level of the game on Legendary difficulty.
Halo 3: Activate Terminal 1 on The Ark.
Halo 2: Activate Terminal 12 on High Charity.
Halo 3: Find and claim the Mythic Skull on Normal or harder.
Complete 400 missions or multiplayer games.
Win 100 multiplayer games.
Halo 3: Beat the par score on Floodgate.
Halo 3: Find and claim the Iron Skull on Normal or harder.
Halo 4: Beat the par score on Shutdown.
Halo 2A MP: Finished as the top player on the winning team in a matchmade game.
H3: ODST: Beat the par score on ONI Alpha Site.
H3: ODST: Beat the par score on Uplift Reserve.
Halo CE: Find and claim the Iron skull in remastered mode.
Halo 4: Complete every level of the game on Heroic difficulty.
Halo 4: Beat the par score on Reclaimer.
Halo 3: Find and claim the Grunt Birthday Party Skull on Normal or harder.
H3: ODST: Find the 11th Audio Log.
Kill 100 Watchers.
Halo 2: Beat the par score on Regret.
Complete 450 missions or multiplayer games.
Earn a total of 250 Double Kill medals in matchmade games.
Halo: Reach: Finish The Package on Legendary with the Scorpion intact.
Halo 2A MP: Kill an opponent by detonating a Fusion Coil.
Halo 4: Complete a match on at least 4 different game types in multiplayer.
H3: ODST: Play a game of Halo 3: ODST on the 22nd of any month.
H3: ODST: Destroy a Wraith…with your bare hands.
H3: ODST: Destroy 5 Phantoms on NMPD HQ.
Halo 4: Beat the par score on Midnight.
Halo 4: Activate Terminal 1 on Requiem.
H3: ODST: Complete any level without dying on Heroic or Legendary.
Halo CE: Complete every level of the game on Legendary difficulty.
Halo 3: Complete every level of the game on Legendary difficulty.
Halo 2: Complete a match on at least 8 different classic multiplayer maps.
Complete 500 missions or multiplayer games.
Halo CE: Complete the Warthog ride of The Maw without being forcibly ejected from your vehicle.
Halo: Reach: Beat the par score on Tip of the Spear.
H3: ODST: Find the 12th Audio Log.
H3: ODST: Beat the par score on NMPD HQ.
Halo 4: Beat the par score on Dawn.
H3: ODST: Beat the par score on Tayari Plaza.
Halo: Reach: Won a matchmade game of Invasion in the 1st phase.
Halo 3: Beat the par time on Sierra 117.
Halo 3: Activate Cortana's Terminal on Cortana.
Win 150 multiplayer games.
Halo CE: Complete a match on at least 8 different classic multiplayer maps.
Halo: Reach: Kill 7 Moa during Winter Contingency.
Halo 2: Beat the par score on Quarantine Zone.
Halo 3: Activate Terminal 7 on Halo.
Halo 3: Find and claim the Tough Luck Skull on Normal or harder.
H3: ODST: Beat the par time on Coastal Highway.
Halo: Reach: Get a Skullamanjaro in a matchmade Headhunter game.
Halo CE: Complete the level The Pillar of Autumn on Legendary without picking up an overshield.
Halo 3: Find and claim the Thunderstorm Skull on Normal or harder.
Kill 25 Engineers.
H3: ODST: Complete every level of the game on Legendary difficulty.
H3: ODST: Beat the par time on ONI Alpha Site.
Halo CE: Beat the par score on The Truth and Reconciliation.
Halo 2: Activate Terminal 1 on Cairo Station.
Halo 2: Beat the par time on The Oracle.
Halo 3: This stuff is your history!
H3: ODST: Find the 13th Audio Log.
Halo CE: Beat the par score on Assault on the Control Room.
Halo CE: Beat the par time on The Truth and Reconciliation.
Halo 2: Beat the par time on Metropolis.
Halo 2: Find and claim the Blind Skull.
Halo 3: Destroy 3 total Phantoms on The Covenant.
Halo 4: Beat the par score on Forerunner.
Halo: Reach: See, he IS in the game!
Halo 3: Beat the par time on Halo.
Halo 3: Find your first missing links.
Halo 3: Listen to the tale of a young Grunt named Flipyap.
Halo: Reach: Beat the par time on The Package.
Halo 3: Find and claim the Fog Skull on Normal or harder.
Halo 2A MP: Get 25 melee kills in multiplayer.
Halo 2: Beat the par score on Gravemind.
Halo CE: Destroy three of the four Banshees on Halo during a single play-through.
H3: ODST: Kill 5 sleeping Grunts on Mombasa Streets.
Halo 2A MP: Complete a game in every one of the 6 updated Anniversary MP maps.
Halo 3: Beat the par score on Cortana.
Halo 4: Beat the par score on Requiem.
H3: ODST: Find the 14th Audio Log.
Halo: Reach: Beat the par score on Exodus.
Halo: Reach: Find Data Pad 3 on Nightfall
Halo 2: Activate Terminal 8 on Sacred Icon.
Halo 4: Take out both Hunters using only the Sticky Detonator on Composer.
Earn a total of 100 Killing Spree medals in matchmade games.
Halo CE: Find and claim the Recession skull in remastered mode.
Halo 2: Listen to a hidden music cue in Halo 2.
Win 200 multiplayer games.
Halo CE: Beat the par score on Halo.
Halo CE: Find and claim the Eye Patch skull in remastered mode.
Halo CE: Activate Terminal 7 on The Library.
Halo 2: Beat the par time on Outskirts.
Halo 2: Complete the level Regret with the Prophet Birthday Skull activated.
Halo 3: Activate Terminal 4 on The Covenant.
Halo 3: Find and claim the Famine Skull on Normal or harder.
Halo 4: Activate Terminal 5 on Shutdown.
H3: ODST: Find the 15th Audio Log.
Halo: Reach: Find Data Pad 2 on ONI: Sword Base
Halo: Reach: Find Data Pad 9 on The Pillar Of Autumn
Halo CE: Find and claim the Boom skull in remastered mode.
Halo 2: Beat the par score on The Oracle.
Halo 2: Beat the par time on Uprising.
Halo 2A MP: Kill 5 people with melee from behind in Anniversary matchmaking.
Halo 4: Complete every level of the game on Legendary difficulty.
Halo: Reach: Complete every level of the game on Legendary difficulty, by yourself.
Halo 4: Activate Terminal 6 on Composer.
Created and saved 5 Custom Maps in Forge.
Halo 3: Beat the par time on Crow's Nest.
Halo 3: Beat the par score on Halo.
Kill 250 Hunters.
Halo 4: Complete all chapters in Spartan Ops Episode 1.
Halo 2: Complete a match on at least 4 different game types in classic multiplayer.
H3: ODST: Find the 16th Audio Log.
H3: ODST: Destroy 7 Wraiths on Oni Alpha Site.
Complete all campaigns on Heroic difficulty.
Halo: Reach: Find Data Pad 5 on Long Night Of Solace
Halo 2: Complete every level of the game on Legendary difficulty.
Halo 3: Activate Terminal 2 on The Ark.
Halo: Reach: Beat the par time on Exodus.
Win 250 multiplayer games.
Earn a total of 2,500 Headshot medals in multiplayer.
H3: ODST: Find the 17th Audio Log.
Halo: Reach: Beat the par time on Winter Contingency.
Halo CE: Beat the par score on Keyes.
Halo 2: Beat the par score on High Charity.
Halo 2: Listen to the Cowardly Grunt's woes.
Halo 3: Find and claim the Catch Skull on Normal or harder.
Halo 3: Find and claim the Tilt Skull on Normal or harder.
Halo 3: Activate Terminal 3 on The Ark.
Halo 4: Activate Terminal 7 on Midnight.
Halo CE: Beat the par time on The Library.
Halo 3: Beat the par time on The Storm.
Halo 2A MP: Blow up the Banshee or Hornet in flight while piloted, with the Rocket Launcher.
Halo 3: Listen to the story of the Final Grunt.
Halo 3: Find and claim the Cowbell Skull on Normal or harder.
H3: ODST: Find the 18th Audio Log.
Halo: Reach: Find Data Pad 10 on Winter Contingency on Legendary difficulty
Halo: Reach: Pad on the run.
Halo: Reach: Complete a Halo: Reach playlist.
Halo CE: Beat the par score on The Silent Cartographer.
Halo CE: Beat the par score on 343 Guilty Spark.
Halo CE: Beat the par score on Two Betrayals.
Halo CE: Activate Terminal 6 on 343 Guilty Spark.
Halo CE: Complete The Pillar of Autumn on Legendary without picking up a health kit.
Created and saved 5 Custom Game types.
Halo 3: Find and claim the IWHBYD Skull on Normal or harder.
H3: ODST: Finish Tayari Plaza with at least one Marine still breathing.
Halo: Reach: Party with the DJ Brute.
Kill 1000 Crawlers.
H3: ODST: Find the 19th Audio Log.
H3: ODST: Complete all Halo 3: ODST Legendary campaign missions in under 3 hours.
Complete one cross-game playlist.
Halo: Reach: Find Data Pad 4 on Tip Of The Spear
Halo CE: Find and claim the Malfunction skull in remastered mode.
Halo 2: Beat the par time on The Arbiter.
Halo 3: Complete a Halo 3 playlist.
Win 300 multiplayer games.
H3: ODST: Find the 20th Audio Log.
Halo: Reach: Find Data Pad 8 on The Package
Halo 2: Grab the energy sword on the level Outskirts.
Halo 3: Activate Terminal 6 on The Covenant.
Halo 4: Assassinate a Knight in any Spartan Ops mission.
Halo 4: Complete all chapters in Spartan Ops Episode 2.
H3: ODST: Find the 21st Audio Log.
H3: ODST: Find the 22nd Audio Log.
Halo: Reach: Beat the par time on New Alexandria.
Halo CE: Find and claim the Bandanna skull in remastered mode.
Halo CE: Find and claim the Grunt Birthday Party skull in remastered mode.
Halo CE: Ride in a Pelican for several seconds on the level 343 Guilty Spark.
Halo 2: Complete Delta Halo without entering a vehicle on Heroic or Legendary.
Halo 3: Activate Terminal 5 on The Covenant.
Halo CE: Complete a match on at least 4 unique game types.
H3: ODST: Find the 23rd Audio Log.
Halo: Reach: Find Data Pad 6 on Exodus
Halo: Reach: Find Data Pad 13 on Tip Of The Spear on Legendary difficulty
Halo: Reach: Use a Pelican turret.
Halo CE: Beat the par time on Keyes.
Halo CE: Beat the par score on The Maw.
Halo CE: Find and claim the Pinata skull in remastered mode.
Halo CE: Listen to the Thirsty Grunt talk about his eating habits.
Halo 2: Complete a level in co-op on Heroic or Legendary with the Masterblaster Skull active.
Halo CE: Kill the first group of enemies on The Truth and Reconciliation without being detected.
Halo 2A MP: On Lockdown, kill an opponent with the hanging ice.
Win 350 multiplayer games.
H3: ODST: Find the 24th Audio Log.
H3: ODST: Find the 25th Audio Log.
H3: ODST: Complete a Halo 3: ODST playlist.
H3: ODST: Is there a toy inside?
Halo: Reach: Beat the par time on Nightfall.
Halo: Reach: Beat the par time on Tip of the Spear.
Halo: Reach: Beat the par time on The Pillar of Autumn.
Halo CE: Find and claim the Fog skull in remastered mode.
Halo 4: Trick or force a Hunter to fall to its demise on Shutdown on Heroic or Legendary.
H3: ODST: Find the 26th Audio Log.
H3: ODST: Find the 27th Audio Log.
H3: ODST: Swap Dare's pistol for a Rocket Launcher on Coastal Highway.
Halo: Reach: Beat the par score on The Package.
Halo: Reach: Create a custom map using Forge World.
Halo CE: Find and claim the Black Eye skull in remastered mode.
Halo CE: Complete a Halo: CE playlist.
Halo CE: Activate all Halo: CE Terminals.
Halo 2: Beat the par score on Sacred Icon.
Halo 2: Find and claim the Iron Skull on Legendary.
Halo 2: Stick a Plasma Grenade to a Stealth Elite on Outskirts.
Halo 3: Beat the par time on Cortana.
Halo 4: What do Marines know about sticks?
Win 400 multiplayer games.
Halo 4: Complete all chapters in Spartan Ops Episode 3.
H3: ODST: Find the 28th Audio Log.
Complete all campaigns on Legendary difficulty.
Halo 2: Beat the par time on Delta Halo.
Halo 2: Beat the par time on Quarantine Zone.
Halo 3: View the communique from Mendicant Bias.
Halo 3: Destined for greatness.
Halo 4: Complete every level of the game on Legendary difficulty, by yourself.
Halo 4: Beat the par score on every Halo 4 level.
Halo 2A MP: In Ricochet, pass once, score once, and kill at least one enemy in the same match.
H3: ODST: Find the 29th Audio Log.
H3: ODST: Beat the par time on NMPD HQ.
H3: ODST: View the missing link.
H3: ODST: Kill a Drone with a flame grenade on Data Hive.
Halo: Reach: Clear Winter Contingency without setting foot in a drivable vehicle.
Halo: Reach: Find Data Pad 11 on ONI: Sword Base on Legendary difficulty
Halo CE: Beat the par time on 343 Guilty Spark.
Halo 2: Beat the par time on The Great Journey.
Halo 2: Beat the par score on Cairo Station.
Halo 2: View both signs in the level Metropolis.
Halo 2: Complete Metropolis without entering a vehicle on Heroic or Legendary.
Halo 4: Beat the par time on Infinity.
Halo 4: Complete a Halo 4 playlist.
Halo 3: Find and claim all Skulls in Halo 3.
Win 450 multiplayer games.
Earn a total of 250 Beat Down medals in multiplayer.
Halo 4: Complete all chapters in Spartan Ops Episode 4.
H3: ODST: Find the 30th Audio Log.
H3: ODST: Find all 30 Audio Logs.
Halo: Reach: Find Data Pad 12 on Nightfall on Legendary difficulty
Halo: Reach: Listen to a hidden music cue.
Halo CE: Beat the par time on The Silent Cartographer.
Halo CE: Complete a level without jumping.
Halo CE: Disapprovingly look at Captain Keyes' abandoned pipe.
Halo 2: Find and claim the Thunderstorm Skull on Legendary.
Halo 2: Collect the Cortana toy in Gravemind.
Halo 2: Find and claim the That's Just...Wrong Skull on Legendary.
Halo 2: Collect the Rampant Cortana toy in High Charity.
Halo 2: Complete a Halo 2 playlist.
Halo 3: On Tsavo Highway, complete the level without entering a vehicle.
Halo 3: Beat the par score on every Halo 3 level.
Halo 3: Trigger the hidden music cue in Halo 3.
Halo 4: Beat the par time on Composer.
Halo 2A MP: In Territories, control any 3 Territories simultaneously for 30 seconds.
Halo 3: Activate all Halo 3 Terminals.
Earn a total of 250 Killjoy medals in matchmade games.
H3: ODST: Beat the par score on Coastal Highway.
H3: ODST: Kill 3 Jetpack Brutes with a shotgun on Oni Alpha Site.
Inscrutable. Mysterious.
Halo: Reach: Find your way into Halsey's Lab on The Package.
Halo: Reach: Find Data Pad 7 on New Alexandria
Halo: Reach: Find Data Pad 14 on Long Night Of Solace on Legendary Difficulty
Halo: Reach: Splatter an enemy using the forklift.
Halo: Reach: Find Data Pad 19 on Lone Wolf on Legendary difficulty
Halo CE: Beat the par time on Halo.
Halo CE: Find and claim all Skulls in Halo: CE.
Halo 2: Beat the par score on Uprising.
Halo 2: Find and claim the Famine Skull on Legendary.
Halo 2: Activate all Halo 2 Terminals.
Halo 2: Shoot the soccer ball in the level Metropolis.
Halo 3: Find a lonely missing link.
Halo 4: Activate all Halo 4 Terminals.
Halo 4: Kill 3 Crawlers in one hit with the Gravity Hammer on Midnight.
Win 500 multiplayer games.
Halo 4: Complete all chapters in Spartan Ops Episode 5.
Complete 1 mission with the LASO playlist skulls enabled.
H3: ODST: Beat the par time on Kizingo Blvd.
Halo: Reach: Beat the par time on ONI: Sword Base.
Halo: Reach: Find Data Pad 15 on Exodus on Legendary difficulty
Halo: Reach: Find Data Pad 16 on New Alexandria on Legendary difficulty
Halo: Reach: Find Data Pad 17 on The Package on Legendary difficulty
Halo: Reach: Fly both the Pelican and Phantom on New Alexandria.
Halo: Reach: Find Data Pad 18 on The Pillar Of Autumn on Legendary difficulty
Halo: Reach: Complete a Legendary campaign mission with 3 or more skulls enabled (Scoring Only).
Halo: Reach: Complete Exodus without using any armor abilities.
Halo 2: Find and claim the Grunt Birthday Party Skull on Legendary.
Halo 2: Find and claim the Envy Skull on Legendary.
Halo 2: Collect the Master Chief toy in Delta Halo.
Halo 2: Collect the Prophet of Regret toy in Regret.
Halo 2: Acquire the Scarab Gun.
Halo 4: Beat the par time on Midnight.
Halo 2: Spot the developer in the opening cutscene of Gravemind on Legendary in Classic Mode.
Halo 3: Watching. Waiting. Plotting.
Halo CE: Play a CTF custom game on Blood Gulch with 4 players. Tri-tip optional.
Halo 3: Find the hidden Skull on the Assembly multiplayer map.
Halo 3: Find the hidden Skull on the Sandbox multiplayer map.
H3: ODST: Beat the par time on Uplift Reserve.
Halo CE: Complete Halo without entering a vehicle.
Halo 2: Beat the par time on Sacred Icon.
Halo 2: Find and claim the Catch Skull on Legendary.
Halo 2: Find and claim the Assassins Skull on Legendary.
Halo 2: Find and claim the Sputnik Skull on Legendary.
Halo 2: Collect the Arbiter toy in Sacred Icon.
Halo 3: Beat the par time on The Ark.
Halo 3: He's watching you.
Halo 4: Beat the par time on Forerunner.
Halo 3: Find the poster of the missing man.
Halo 2A MP: Found and destroyed the BLAST soda can on Stonetown.
Halo 2A MP: Found and destroyed the BLAST soda can on Zenith.
Halo 2A MP: Found and destroyed the BLAST soda can on Warlord.
Halo 2A MP: Killed 15 opponents that were airborne from a Man Cannon.
Halo 2A MP: In Juggernaut, survive as the Juggernaut for 30 seconds.
Halo 2A MP: Found and destroyed the BLAST soda can on Lockdown.
Halo CE: Destroy four Wraith tanks in Assault on the Control Room with the Scorpion tank.
Halo 2A MP: Found and destroyed the BLAST soda can on Bloodline.
Halo 2A MP: Found and destroyed the BLAST soda can on Shrine.
Halo 4: Complete all chapters in Spartan Ops Episode 7.
Halo 4: Complete all chapters in Spartan Ops Episode 6.
Halo 3: Find the hidden Skull on the Heretic multiplayer map.
Halo 3: Find the hidden Skull on the Longshore multilayer map.
Halo 3: Find the hidden Skull on the Orbital multiplayer map.
Halo 3: Find the hidden Skull on the Citadel multiplayer map.
Halo: Reach: Beat the par score on every Halo: Reach level.
Halo: Reach: Encounter the hidden marines on Exodus.
Halo: Reach: Find the hidden Banshees on The Package.
Halo: Reach: Find all Data Pads.
Halo CE: Beat the par time on Assault on the Control Room.
Halo CE: Beat the par time on The Maw.
Halo CE: Trigger a hidden music cue in Halo: CE.
Halo CE: It's a sign.
Halo 2: Find and claim the Mythic Skull on Legendary.
Halo 2: Find and claim the Anger Skull on Legendary.
Halo 2: Find and claim the Black Eye Skull on Legendary.
Halo 2: Collect the Tartarus toy in Quarantine Zone.
Halo 2: Collect the Librarian toy in Uprising.
Halo 2: Spot the hippo on the walls of Headlong in classic multiplayer.
Halo 2: Collect the Didact toy in The Great Journey.
Halo 2: View this hidden message on the classic Beaver Creek map.
Halo 3: Beat the par time on The Covenant.
Halo 4: Beat the par time on Requiem.
Halo 4: Beat the par time on Shutdown.
Halo 3: Who DARED to discard this brave animal?
Halo 2A MP: On Zenith, personally activate the center energy shield 3 times in one matchmade game.
Halo 2A MP: Destroyed all the Halo 2 Anniversary Multiplayer BLAST soda cans.
Halo 2A MP: In Assault, take, plant, and score from the bomb spawn without dying or dropping it.
Halo 2A MP: In Anniversary matchmaking, win 10 games as an Elite.
Halo 4: Complete all chapters in Spartan Ops Episode 8.
Halo 4: Complete all chapters in Spartan Ops Episode 9.
Halo 4: Complete all chapters in Spartan Ops Episode 10.
Earn a total of 2,500 Assist medals in multiplayer.
Halo 3: Find all the hidden multiplayer Skulls.
H3: ODST: Beat the par score on Kikowani Station.
H3: ODST: Beat the par time on Tayari Plaza.
H3: ODST: Assassinate 3 Brutes in a row on Data Hive.
Halo: Reach: Beat par time on all Halo: Reach levels.
Halo CE: Beat the par time on Two Betrayals.
Halo CE: Find the hidden Rex sign on The Maw.
Halo 2: Find and claim the IWHBYD Skull on Legendary.
Halo 2: Find and claim the Ghost Skull on Legendary.
Halo 2: Spot the Sid graffiti on the walls of Coagulation in classic multiplayer.
Halo 2: View the smiling face in the classic multiplayer map Coagulation.
Halo 2: Collect all eight Halo toys.
Halo 2A MP: On Warlord, get 5 active camouflage power ups in a single game.
Halo 2A MP: Get a kill with the Gungoose while airborne.
Halo 4: Why are you even here?
Earn a total of 100 Legendary medals in matchmade games.
H3: ODST: Beat the par time on Kikowani Station.
H3: ODST: Complete NMPD HQ without firing the Sniper Rifle on Heroic or Legendary.
H3: ODST: Splatter 7 enemies with a Banshee on Kikowani Station.
Complete three cross-game playlists.
Halo: Reach: Flip the switches to become a Reach Racer!
Halo: Reach: Complete three Halo: Reach playlists.
Halo CE: Beat par time on all Halo: CE levels.
Halo 2: Beat the par time on Gravemind.
Halo 2: In The Oracle, find the holo-drone before the Heretic Leader activates it.
Halo 2: Oh, hi!
Halo 3: Beat the par time on all Halo 3 levels.
Halo 3: On The Ark, complete the level without entering a vehicle on Legendary.
Halo 4: Beat the par time on Reclaimer.
Halo 2A MP: Win 10 matches on Bloodline in multiplayer.
Halo 2A MP: Get 25 kills with the Gungoose in multiplayer.
Halo CE: Finish The Silent Cartographer without shooting, grenades, melee, dying or restarting.
Halo 4: Complete all Spartan Ops chapters.
H3: ODST: Find a legendary hidden music cue.
H3: ODST: Face it.
Activate all terminals.
Halo: Reach: Kill 1000 Skirmishers.
Halo CE: Beat the par score on all Halo: CE levels.
Halo 2: Beat par time on all Halo 2 levels.
Halo 2: Beat the par time on Regret.
Halo 2: Find and claim all Skulls in Halo 2.
Halo 2A MP: In one match, steal a total of 5 occupied vehicles from opponents.
Halo 4: Carry a UNSC weapon all the way through Forerunner on Heroic or Legendary.
Halo 2A MP: Get 30 kills with the Hornet in multiplayer.
Halo 3: Complete three Halo 3 playlists.
Find and claim all the campaign skulls in Halo:CE, Halo 2, and Halo 3.
Halo 4: Complete all Spartan Ops chapters on Normal difficulty.
Halo 4: Complete The Cauldron Base of Spartan Ops without losing a generator on Heroic or Legendary.
Earn a total of 250 CTF Mode Specific medals in matchmade games.
H3: ODST: Beat par time on all Halo 3: ODST levels.
H3: ODST: Beat par score on all Halo 3: ODST levels.
H2A: Found and destroyed the BLAST soda can on Remnant..
H3: ODST: Finish any level solo on Legendary, with no shots fired or grenades thrown.
Complete the Master Chief Saga playlist.
Halo: Reach: Achieve a score of 30,000 points on Lone Wolf.
Halo: Reach: Complete all Halo: Reach Legendary campaign missions in under 3 hours.
Halo CE: Complete The Library on Heroic or Legendary difficulty without dying.
Halo CE: Kill every Elite on the level Keyes on Heroic or Legendary difficulty.
Halo 4: Beat the par time on all Halo 4 levels.
Halo 4: Complete Infinity without one preventable Marine death on Heroic or Legendary.
Halo 2: View one of the seasonal signs on Zanzibar in classic multiplayer.
Halo 2: She's not picking up.
Halo 2A MP: On Shrine in CTF, activate the enemy base waterfall and, before it stops, grab the flag.
Halo 4: Complete all Spartan Ops chapters on Heroic difficulty.
Earn a total of 500 Grenade Kill or Plasma Kill medals in matchmade games.
H3: ODST: Complete three Halo 3: ODST playlists.
H3: ODST: Pilot a Banshee on Kizingo Boulevard.
Halo CE: Complete Two Betrayals on Legendary difficulty without picking up a new weapon.
Halo CE: Complete three Halo: CE playlists.
Halo 2: Beat the par score on every Halo 2 level.
Halo 2: Complete a level with only the Streaking Skull active on Heroic or Legendary.
Halo 2: Complete three Halo 2 playlists.
Halo 3: View 2 different sigils on Valhalla.
Halo 3: Complete all Halo 3 Legendary campaign missions in under 3 hours.
Halo 2A MP: In King of the Hill, kill 5 opponents within your controlled hill.
Halo 3: 4 vehicles, 1 gap on Legendary using Cowbell, Catch, Thunderstorm, Mythic, and Tough Luck.
Halo 4: On Reclaimer, use a Wraith to kill at least four enemy Wraiths on Heroic or Legendary.
Halo 4: Complete three Halo 4 playlists.
Kill 1000 Knights.
Halo 4: Complete all Spartan Ops chapters on Legendary difficulty.
Halo 4: Complete all Spartan Ops chapters solo on Legendary difficulty.
Halo 4: Save at least one Marine on Hacksaw (Ep.2 Ch.3) of Spartan Ops on Heroic or Legendary.
Halo 4: Survive Spartan Miller (Ep.5 Ch.1) of Spartan Ops on Heroic or Legendary.
Earn a total of 250 KOTH Mode Specific medals in matchmade games.
Halo CE: Launch a Warthog for at least 5 seconds and have it splatter an enemy.
Halo: Reach: Achieve a score of 150,000 points on Lone Wolf.
Halo: Reach: Complete the Halo: Reach LASO Campaign playlist.
Halo CE: Complete Two Betrayals on Legendary difficulty without killing any Grunts.
Halo 3: Complete Halo on 4-player Legendary co-op, with Iron Skull, and everyone in Ghosts.
Halo 4: Complete all Halo 4 Legendary campaign missions in under 3 hours.
Halo 3: Complete the Halo 3 LASO Campaign playlist.
Kill 1000 Watchers.
H3: ODST: Complete Coastal Highway on 4-player Legendary co-op, with Iron, and no 'Hog or Scorpion.
H3: ODST: Complete a Halo 3: ODST LASO Campaign playlist.
Halo CE: Halo CE: Complete all Halo: CE Legendary campaign missions in under 3 hours.
Halo CE: Complete the Halo: CE LASO Campaign playlist.
Halo 4: Complete the Halo 4 LASO Campaign playlist.
Halo 2A MP: In Anniversary matchmaking, earn a total of 100 Splatter medals.
Halo 2A MP: In Anniversary matchmaking, earn a total of 100 Environmentalist medals.
Complete each individual game specific LASO playlist for every Halo game.
Halo 2: Complete all Halo 2 Legendary campaign missions in under 3 hours.
Halo 2: Complete the LASO campaign playlist.