Halo 2: In The Oracle, find the holo-drone before the Heretic Leader activates it.

Halo CE: Complete 343 Guilty Spark.

Collect 3,000 campaign or playlist medals.

Halo CE: Play Halo: CE on the 15th of any month.

Collect 5,000 campaign or playlist medals.

Halo CE: Complete a Halo: CE playlist.

Collect 4,000 campaign or playlist medals.

Halo 4: Play a game of Halo 4 on the 6th of any month.

Collect 2,000 campaign or playlist medals.

Halo 3: Complete the Halo 3 LASO Campaign playlist.

Halo 3: Complete three Halo 3 playlists.

Earn a total of 2,500 Headshot medals in multiplayer.

Halo CE: Launch a Warthog for at least 5 seconds and have it splatter an enemy.

Halo CE: Kill the first group of enemies on The Truth and Reconciliation without being detected.

Collect 1,000 campaign or playlist medals.

Halo CE: Beat the par time on The Maw.

Halo 2: Collect the Master Chief toy in Delta Halo.

Halo 2: Spot the hippo on the walls of Headlong in classic multiplayer.

Halo 3: Complete Halo on 4-player Legendary co-op, with Iron Skull, and everyone in Ghosts.

Halo 2: Beat the par score on every Halo 2 level.

Halo 2: Beat the par time on The Great Journey.

Halo CE: Activate Terminal 1 on The Pillar of Autumn.

Halo 3: Beat the par score on The Storm.

Halo 3: Complete The Storm.

Halo CE: Complete Assault on the Control Room.

Halo 3: Find the hidden Skull on the Assembly multiplayer map.

Halo 3: Activate Terminal 6 on The Covenant.

Halo 2: Play a game of Halo 2 Anniversary on the 9th of any month.

Halo 2: Complete the LASO campaign playlist.

Halo CE: Play a CTF custom game on Blood Gulch with 4 players on the same console. Tri-tip optional.

Kill 100 Grunts.

Win 250 multiplayer games.

Halo CE: Storm The Silent Cartographer beach with no Marine casualties on Heroic or Legendary.

Halo CE: Activate Terminal 6 on 343 Guilty Spark.

Halo CE: Complete every level of the game having seen it in both classic and remastered mode.

Halo 3: Activate Terminal 3 on The Ark.

Halo 3: On Tsavo Highway, complete the level without entering a vehicle.

Halo CE: Complete every level of the game on Heroic difficulty.

Halo 2: Stick a Plasma Grenade to a Stealth Elite on Outskirts.

Halo 3: Beat the par score on every Halo 3 level.

Halo 2: Complete every level of the game on Easy difficulty.

Complete 400 missions or multiplayer games.

Halo CE: Complete every level of the game on Normal difficulty.

Kill a 343 developer in matchmaking or someone who has this achievement.

Halo 2A MP: Destroyed all the Halo 2 Anniversary Multiplayer BLAST soda cans.

Halo 2A MP: Found and destroyed the BLAST soda can on Bloodline.

Halo 2A MP: Blow up the Banshee or Hornet in flight while piloted, with the Rocket Launcher.

Halo 2: Beat the par score on Cairo Station.

Halo 2A MP: In Assault, take, plant, and score from the bomb spawn without dying or dropping it.

Complete 200 missions or multiplayer games.

Halo 3: Complete a Halo 3 playlist.

Halo 2: Beat the par score on Delta Halo.

Halo 3: Find all the hidden multiplayer Skulls.

Complete any co-op level on Legendary difficulty.

Halo 4: Complete Infinity without one preventable Marine death on Heroic or Legendary.

Complete any co-op level on Heroic difficulty.

Halo 2: Complete Cairo Station.

Complete 300 missions or multiplayer games.

Halo 3: Fight alongside and listen to The Man. The Legend. Chips Dubbo.

Complete 150 missions or multiplayer games.

Earn a total of 500 Grenade Kill or Plasma Kill medals in matchmade games.

Halo 3: Beat the par score on Tsavo Highway.

Halo CE: Beat the par score on The Silent Cartographer.

Halo 4: Activate Terminal 3 on Infinity.

Halo CE: Complete a match on at least 4 unique game types.

Kill 100 Watchers.

Halo 4: Complete a Halo 4 playlist.

Collect 7,000 campaign or playlist medals.

Halo 2A MP: Kill an opponent by detonating a Fusion Coil.

Complete 350 missions or multiplayer games.

Halo 2: Complete Metropolis without entering a vehicle on Heroic or Legendary.

Halo 4: Complete Composer.

Halo 2: Complete three Halo 2 playlists.

Halo CE: Beat the par score on The Maw.

Win 50 multiplayer games.

Halo 3: Listen to the story of the Final Grunt.

Halo 4: Beat the par time on Midnight.

Halo 2A MP: With a Sniper Rifle or Beam Rifle kill an enemy that was zoomed in.

Halo 2: Listen to the Cowardly Grunt's woes.

Halo 4: Activate Terminal 7 on Midnight.

Halo 2: Activate Terminal 1 on Cairo Station.

Halo 3: Beat the par time on Floodgate.

Kill 1000 Brutes.

Halo 4: Beat the par score on Requiem.

Halo 4: Complete Dawn.

Halo CE: Activate all Halo: CE Terminals.

Halo 2A MP: Get awarded at least 10 different medals in one multiplayer game.

Kill 100 Flood.

Halo 2: Activate Terminal 9 on Quarantine Zone.

Halo 2: Complete Delta Halo.

Halo 2: Complete any campaign level without dying on Normal or harder.

Halo 2: View one of the seasonal signs on Zanzibar in classic multiplayer.

Halo 2: Activate Terminal 8 on Sacred Icon.

Halo 3: Complete all Halo 3 Legendary campaign missions in under 3 hours.

Halo 4: Complete three Halo 4 playlists.

Halo CE: Beat par time on all Halo: CE levels.

Halo 4: Kill 3 Crawlers in one hit with the Gravity Hammer on Midnight.

Halo 2: Collect the Tartarus toy in Quarantine Zone.

Halo CE: Beat the par score on 343 Guilty Spark.

Halo 3: Find the hidden Skull on the Citadel multiplayer map.

Halo 3: Complete Floodgate.

Halo CE: Complete The Truth and Reconciliation with at least four rounds left in your Sniper Rifle.

Halo 2A MP: On Lockdown, kill an opponent with the hanging ice.

Halo 3: Beat the par time on The Ark.

Kill 1000 Elites.

Halo 2A MP: On Shrine in CTF, activate the enemy base waterfall and, before it stops, grab the flag.

Complete 10 missions or multiplayer games.

Halo CE: Beat the par time on The Pillar of Autumn.

Halo 4: Access the Master Chief's records on Dawn.

Earn a total of 250 Beat Down medals in multiplayer.

Halo 3: Trigger the hidden music cue in Halo 3.

Halo 2: Fly the Heretic Banshee.

Kill 1000 Crawlers.

Earn a total of 100 Legendary medals in matchmade games.

Halo 2: Beat the par time on Cairo Station.

Halo 2: Collect the Cortana toy in Gravemind.

Halo 2A MP: In Anniversary multiplayer, receive 2 or more Double Kill medals.

Earn a total of 250 Double Kill medals in matchmade games.

Halo 2: View both signs in the level Metropolis.

Halo 3: View the communique from Mendicant Bias.

Halo 4: Beat the par time on all Halo 4 levels.

Halo CE: Beat the par time on Two Betrayals.

Halo 3: On The Ark, complete the level without entering a vehicle on Legendary.

Halo 3: View 2 different sigils on Valhalla.

Halo 2: View this hidden message on the classic Beaver Creek map.

Halo 2: View the smiling face in the classic multiplayer map Coagulation.

Halo 2: Complete a match on at least 4 different game types in classic multiplayer.

Halo 4: Beat the par score on Shutdown.

Halo 3: Find and claim all Skulls in Halo 3.

Halo 2A MP: In Territories, control any 3 Territories simultaneously for 30 seconds.

Halo 4: Beat the par score on Midnight.

Halo 3: Complete every level of the game on Heroic difficulty.

Halo 3: Complete a match on at least 8 different multiplayer maps.

Halo 2: Activate Terminal 7 on Regret.

Halo 2: Activate Terminal 6 on Delta Halo.

Halo 2A MP: Found and destroyed the BLAST soda can on Shrine.

Halo 2: Activate Terminal 3 on Metropolis.

Halo CE: Beat the par time on Assault on the Control Room.

Halo CE: Complete three Halo: CE playlists.

Halo CE: Destroy four Wraith tanks in Assault on the Control Room with the Scorpion tank.

Kill 250 Hunters.

Halo 2: Beat the par time on The Arbiter.

Halo CE: Kill a Hunter with one pistol round.

Halo CE: Beat the par time on The Truth and Reconciliation.

Halo 4: Trick or force a Hunter to fall to its demise on Shutdown on Heroic or Legendary.

Halo 4: Beat the par score on every Halo 4 level.

Halo 3: Beat the par score on Floodgate.

Halo 2: Activate Terminal 5 on The Oracle.

Halo 2: Beat the par time on High Charity.

Halo CE: Complete a level without jumping.

Halo 3: Complete every level of the game on Legendary difficulty.

Halo CE: Beat the par score on The Truth and Reconciliation.

Halo 2: Beat the par score on Regret.

Halo 2A MP: Kill an opponent that has the Ninja Redux achievement in Anniversary matchmaking.

Halo 3: Listen to the tale of a young Grunt named Flipyap.

Complete a campaign mission or a match of multiplayer.

Halo 4: Activate Terminal 4 on Reclaimer.

Halo 4: Complete all Halo 4 Legendary campaign missions in under 3 hours.

Halo 4: What do Marines know about sticks?

Halo 2A MP: In Anniversary matchmaking, win 10 games as an Elite.

Halo CE: Beat the par time on Halo.

Kill 5,000 enemies or players.

Halo 2: Beat the par time on Gravemind.

Halo 4: Complete Forerunner.

Win 100 multiplayer games.

Halo 2: Beat the par score on The Great Journey.

Kill 1000 Flood.

Created and saved 5 Custom Game types.

Complete 50 missions or multiplayer games.

Halo 2A MP: Found and destroyed the BLAST soda can on Stonetown.

Halo CE: Ride in a Pelican for several seconds on the level 343 Guilty Spark.

Halo CE: Beat the par score on Halo.

Halo 4: Beat the par time on Reclaimer.

Halo 4: Take out both Hunters using only the Sticky Detonator on Composer.

Halo 2: Kill an enraged, berserk Brute using melee.

Halo 3: Beat the par time on Halo.

Halo CE: Halo CE: Complete all Halo: CE Legendary campaign missions in under 3 hours.

Kill 100 Brutes.

Halo 4: Complete a match on at least 8 different multiplayer maps.

Halo 2: Beat par time on all Halo 2 levels.

Halo 2: Shoot the soccer ball in the level Metropolis.

Halo 2A MP: In one match, steal a total of 5 occupied vehicles from opponents.

Halo 2: Complete Gravemind.

Halo CE: Complete every level of the game on Easy difficulty.

Kill 1000 Grunts.

Halo 2A MP: Get a kill with the Gungoose while airborne.

Halo 3: Beat the par score on Halo.

Halo 2A MP: Complete a game in every one of the 6 updated Anniversary MP maps.

Halo 2: Complete a match on at least 8 different classic multiplayer maps.

Halo 2: Collect all eight Halo toys.

Halo 3: Complete every level of the game on Easy difficulty.

Halo CE: Find the hidden Rex sign on The Maw.

Halo 2A MP: In Ricochet, pass once, score once, and kill at least one enemy in the same match.

Halo 2: Find and claim all Skulls in Halo 2.

Halo CE: Complete The Truth and Reconciliation.

Halo CE: Complete Two Betrayals.

Halo CE: Kill every Elite on the level Keyes on Heroic or Legendary difficulty.

Halo 3: Activate Terminal 5 on The Covenant.

Complete 250 missions or multiplayer games.

Halo 3: Beat the par score on Sierra 117.

Halo 2: Complete Uprising.

Halo 3: Beat the par score on The Covenant.

Complete all campaigns on Normal difficulty.

Halo 2: Beat the par score on Sacred Icon.

Halo 4: Beat the par score on Dawn.

Halo CE: Beat the par score on Assault on the Control Room.

Halo 4: Complete every level of the game on Normal difficulty.

Halo CE: Complete Halo.

Halo 3: Find a lonely missing link.

Halo 2: Complete Delta Halo without entering a vehicle on Heroic or Legendary.

Halo 4: Beat the par score on Composer.

Halo CE: Find and claim all Skulls in Halo: CE.

Halo 3: Destined for greatness.

Halo CE: Beat the par score on Keyes.

Complete all campaigns on Easy difficulty.

Halo 2: Beat the par score on The Arbiter.

Halo 3: Find the hidden Skull on the Heretic multiplayer map.

Halo 2: Complete every level of the game on Heroic difficulty.

Halo 2: Spot the developer in the opening cutscene of Gravemind on Legendary in Classic Mode.

Halo CE: Complete any level on Heroic difficulty or higher without taking health damage.

Halo 2: Oh, hi!

Halo 2A MP: Found and destroyed the BLAST soda can on Zenith.

Halo 2: Complete High Charity.

Halo 3: Beat the par time on Tsavo Highway.

Halo 3: Who DARED to discard this brave animal?

Halo CE: Beat the par time on The Silent Cartographer.

Halo CE: Activate Terminal 5 on Assault on the Control Room.

Halo 3: Complete Crow's Nest.

Halo 2: Beat the par time on Quarantine Zone.

Halo CE: Complete Halo without entering a vehicle.

Kill 50 Hunters.

Complete one cross-game playlist.

Complete 100 missions or multiplayer games.

Halo CE: Complete The Pillar of Autumn on Legendary without picking up a health kit.

Halo 2: Activate all Halo 2 Terminals.

Halo 4: Activate Terminal 1 on Requiem.

Halo 2: Collect the Rampant Cortana toy in High Charity.

Halo 4: Complete every level of the game on Heroic difficulty.

Complete all campaigns on Heroic difficulty.

Halo 2: Beat the par time on Regret.

Kill 100 Knights.

Halo CE: Activate Terminal 4 on The Silent Cartographer.

Win 200 multiplayer games.

Halo 4: Complete Infinity.

Halo 2: Activate Terminal 2 on Outskirts.

Halo 2: Activate Terminal 4 on The Arbiter.

Halo 4: Beat the par time on Requiem.

Halo 3: Activate Terminal 2 on The Ark.

Halo 2A MP: In King of the Hill, kill 5 opponents within your controlled hill.

Halo CE: Beat the par score on Two Betrayals.

Halo 2 MP: In Classic or Anniversary matchmaking, stop the killing spree of another player.

Halo 4: Beat the par score on Infinity.

Collect 500 campaign or playlist medals.

Halo 3: Complete a match on at least 4 different game types in multiplayer.

Kill 100 enemies or players.

Halo 4: Activate Terminal 6 on Composer.

Halo CE: Complete Keyes.

Halo CE: Activate Terminal 10 on The Maw.

Halo 3: Beat the par score on Crow's Nest.

Kill 1000 Knights.

Halo 4: Activate Terminal 5 on Shutdown.

Halo 2: Activate Terminal 10 on Gravemind.

Halo 3: Complete Sierra 117.

Complete each individual game specific LASO playlist for every Halo game.

Halo 2: Complete every level of the game on Normal difficulty.

Halo 2: Complete The Great Journey.

Get killed by the Guardians.

Halo 2: Beat the par score on Uprising.

Halo 3: Complete Cortana.

Halo 4: Complete every level of the game on Legendary difficulty.

Halo CE: Complete The Library.

Complete 500 missions or multiplayer games.

Halo CE: Complete The Maw.

Kill 100 Elites.

Halo 2: She's not picking up.

Halo 3: Complete Tsavo Highway.

Halo CE: Complete The Silent Cartographer.

Halo 3: Complete The Covenant.

Halo CE: Complete Two Betrayals on Legendary difficulty without picking up a new weapon.

Halo 2: Beat the par score on The Oracle.

Earn a total of 250 KOTH Mode Specific medals in matchmade games.

Halo 2: Collect the Arbiter toy in Sacred Icon.

Win 300 multiplayer games.

Halo 3: Play a game of Halo 3 on the 25th of any month.

Halo 2A MP: Found and destroyed the BLAST soda can on Lockdown.

Halo CE: Listen to the Thirsty Grunt talk about his eating habits.

Halo 4: Carry a UNSC weapon all the way through Forerunner on Heroic or Legendary.

Halo CE: Complete the Warthog ride of The Maw without being forcibly ejected from your vehicle.

Find and claim all the campaign skulls in Halo:CE, Halo 2, and Halo 3.

Complete all campaigns on Legendary difficulty.

Halo 2: Complete every level of Halo 2 having seen it in both classic and remastered mode.

Halo 2A MP: Kill an opponent that has the Legendary Anniversary achievement.

Halo 3: Beat the par time on Crow's Nest.

Halo 2: Complete every level of the game on Legendary difficulty.

Halo 3: Activate Terminal 4 on The Covenant.

Halo CE: Beat the par time on The Library.

Halo 2: Beat the par time on Metropolis.

Halo 3: Beat the par time on Sierra 117.

Halo CE: Activate Terminal 3 on The Truth and Reconciliation.

Halo 4: Complete every level of the game on Easy difficulty.

Kill 100 Jackals.

Earn a total of 100 Killing Spree medals in matchmade games.

Complete any co-op level on Normal difficulty.

Halo 2: Complete a level with only the Streaking Skull active on Heroic or Legendary.

Halo 2A MP: In Juggernaut, survive as the Juggernaut for 30 seconds.

Win 400 multiplayer games.

Play a multiplayer or co-op game at least 3 months after your first game.

Win 350 multiplayer games.

Halo 3: Activate Terminal 7 on Halo.

Halo 4: Beat the par time on Composer.

Halo 4: Complete a match on at least 4 different game types in multiplayer.

Halo 4: Beat the par score on Reclaimer.

Win 10 multiplayer games.

Halo 2: Beat the par time on Sacred Icon.

Complete the Master Chief Saga playlist.

Halo 4: Activate all Halo 4 Terminals.

Halo CE: Beat the par time on 343 Guilty Spark.

Halo 3: Beat the par time on The Storm.

Kill 20,000 enemies or players.

Halo CE: Complete the Halo: CE LASO Campaign playlist.

Halo CE: Complete The Library on Heroic or Legendary difficulty without dying.

Halo 2: Complete a level in co-op on Heroic or Legendary with the Masterblaster Skull active.

Halo CE: Complete every level of the game on Legendary difficulty.

Halo 2: Complete The Arbiter.

Halo 4: Complete every level of the game on Legendary difficulty, by yourself.

Halo 2: Fight alongside the legendary Chips Dubbo and listen to his words.

Halo 3: Activate Cortana's Terminal on Cortana.

Complete 450 missions or multiplayer games.

Halo 2: Beat the par score on Quarantine Zone.

Collect 9,000 campaign or playlist medals.

Halo 3: Find the hidden Skull on the Longshore multilayer map.

Halo CE: Complete Two Betrayals on Legendary difficulty without killing any Grunts.

Halo 4: Activate Terminal 2 on Forerunner.

Activate all terminals.

Halo 2A MP: Get 25 kills with the Gungoose in multiplayer.

Halo CE: Trigger a hidden music cue in Halo: CE.

Halo 2: Find and claim the Famine Skull on Legendary.

Halo 2: Find and claim the Ghost Skull on Legendary.

Halo 2: Find and claim the Grunt Birthday Party Skull on Legendary.

Halo 3: Beat the par time on Cortana.

Halo 2: Find and claim the Iron Skull on Legendary.

Halo 3: He's watching you.

Created and saved 5 Custom Maps in Forge.

Halo 2: Find and claim the IWHBYD Skull on Legendary.

Collect 10,000 campaign or playlist medals.

Halo 2: Find and claim the Mythic Skull on Legendary.

Halo 2: Find and claim the Sputnik Skull on Legendary.

Halo 2: Find and claim the That's Just...Wrong Skull on Legendary.

Halo 2: Find and claim the Thunderstorm Skull on Legendary.

Halo 3: Find and claim the Black Eye Skull on Normal or harder.

Collect 8,000 campaign or playlist medals.

Halo 3: Find and claim the Blind Skull on Normal or harder.

Halo 3: Find and claim the Catch Skull on Normal or harder.

Halo 3: Find and claim the Cowbell Skull on Normal or harder.

Halo 3: Find and claim the Famine Skull on Normal or harder.

Halo 3: Find and claim the Fog Skull on Normal or harder.

Halo 3: Find and claim the Grunt Birthday Party Skull on Normal or harder.

Halo 3: Find and claim the Iron Skull on Normal or harder.

Halo 3: Find and claim the IWHBYD Skull on Normal or harder.

Halo 3: Find and claim the Mythic Skull on Normal or harder.

Halo 3: Find and claim the Thunderstorm Skull on Normal or harder.

Halo 3: Find and claim the Tilt Skull on Normal or harder.

Halo 3: Find and claim the Tough Luck Skull on Normal or harder.

Halo CE: Find and claim the Bandanna skull in remastered mode.

Halo CE: Find and claim the Black Eye skull in remastered mode.

Halo CE: Find and claim the Boom skull in remastered mode.

Halo CE: Find and claim the Eye Patch skull in remastered mode.

Halo CE: Find and claim the Famine skull in remastered mode.

Halo CE: Find and claim the Fog skull in remastered mode.

Halo CE: Find and claim the Foreign skull in remastered mode.

Halo CE: Find and claim the Grunt Birthday Party skull in remastered mode.

Halo CE: Find and claim the Iron skull in remastered mode.

Halo CE: Find and claim the Malfunction skull in remastered mode.

Halo CE: Find and claim the Mythic skull in remastered mode.

Halo CE: Find and claim the Pinata skull in remastered mode.

Halo CE: Find and claim the Recession skull in remastered mode.

Halo 2: Beat the par time on Delta Halo.

Halo 2: Spot the Sid graffiti on the walls of Coagulation in classic multiplayer.

Halo 2: Listen to a hidden music cue in Halo 2.

Halo CE: Complete a match on at least 8 different classic multiplayer maps.

Halo 2: Kill 7 opponents from behind in a row without being spotted.

Halo 2: Drive a Scorpion while playing as the Arbiter.

Halo 2A MP: Killed 15 opponents that were airborne from a Man Cannon.

Halo 2: Find and claim the Anger Skull on Legendary.

Halo 2: Find and claim the Assassins Skull on Legendary.

Halo 2: Find and claim the Black Eye Skull on Legendary.

Halo 2: Find and claim the Blind Skull.

Halo 2: Find and claim the Catch Skull on Legendary.

Halo 2: Find and claim the Envy Skull on Legendary.

Halo 3: Destroy 3 total Phantoms on The Covenant.

Halo 4: Beat the par time on Dawn.

Halo CE: Complete The Pillar of Autumn.

Halo CE: Beat the par score on The Pillar of Autumn.

Earn a total of 250 CTF Mode Specific medals in matchmade games.

Halo 2A MP: On Warlord, get 5 active camouflage power ups in a single game.

Halo 3: Find your first missing links.

Halo 3: Complete every level of the game on Normal difficulty.

Halo 2A MP: Get 25 melee kills in multiplayer.

Halo 2: Collect the Didact toy in The Great Journey.

Halo 2: Complete Quarantine Zone.

Win 450 multiplayer games.

Halo CE: Activate Terminal 7 on The Library.

Halo 4: Beat the par time on Forerunner.

Halo 3: Beat the par score on The Ark.

Halo CE: Beat the par score on The Library.

Halo 4: Complete Reclaimer.

Halo 2A MP: Win 10 matches on Bloodline in multiplayer.

Halo 2: Beat the par time on The Oracle.

Halo 3: Complete The Ark.

Halo 2: Complete Regret.

Halo 2: Collect the Prophet of Regret toy in Regret.

Kill 1000 Watchers.

Halo 4: Complete Requiem.

Halo 3: Complete Halo.

Halo CE: It's a sign.

Halo CE: Activate Terminal 8 on Two Betrayals.

Halo 2: Complete Metropolis.

Halo 4: Complete Midnight.

Halo 3: Find the poster of the missing man.

Halo CE: Activate Terminal 9 on Keyes.

Halo 3: 4 vehicles, 1 gap on Legendary using Cowbell, Catch, Thunderstorm, Mythic, and Tough Luck.

Halo 2: Collect the Librarian toy in Uprising.

Inscrutable. Mysterious.

Halo 3: Watching. Waiting. Plotting.

Halo 2: Complete all Halo 2 Legendary campaign missions in under 3 hours.

Halo 4: On Reclaimer, use a Wraith to kill at least four enemy Wraiths on Heroic or Legendary.

Win 500 multiplayer games.

Halo 2A MP: Finished as the top player on the winning team in a matchmade game.

Halo 4: Complete the Halo 4 LASO Campaign playlist.

Halo CE: Fight alongside Chips Dubbo and listen to his words of wisdom.

Halo 2: Complete the level Regret with the Prophet Birthday Skull activated.

Halo 2: Activate Terminal 12 on High Charity.

Earn a total of 2,500 Assist medals in multiplayer.

Halo 2A MP: Kill 5 people with melee from behind in Anniversary matchmaking.

Halo 2: Beat the par time on Uprising.

Complete 1 mission with the LASO playlist skulls enabled.

Halo 2: Grab the energy sword on the level Outskirts.

Halo 2: Beat the par score on Metropolis.

Halo 3: Activate Terminal 1 on The Ark.

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.

Halo 2: Beat the par time on Outskirts.

Halo 2A MP: Found and destroyed the BLAST soda can on Warlord.

Halo CE: Disapprovingly look at Captain Keyes' abandoned pipe.

Halo 3: Activate all Halo 3 Terminals.

Halo CE: Destroy three of the four Banshees on Halo during a single play-through.

Halo 2: Beat the par score on Outskirts.

Halo 2: Complete Sacred Icon.

Halo CE: Activate Terminal 2 on Halo.

Halo 2: Activate Terminal 13 on The Great Journey.

Complete three cross-game playlists.

Halo 2: Beat the par score on Gravemind.

Collect 6,000 campaign or playlist medals.

Halo 3: Find the hidden Skull on the Sandbox multiplayer map.

Halo 2: Acquire the Scarab Gun.

Halo 2: Complete The Oracle.

Kill 1000 Jackals.

Halo 3: Find the hidden Skull on the Orbital multiplayer map.

Halo 2: Activate Terminal 11 on Uprising.

Halo 2: Beat the par score on High Charity.

Halo 3: Beat the par score on Cortana.

Halo CE: Beat the par time on Keyes.

Halo 4: Beat the par time on Infinity.

Halo 2: Complete a Halo 2 playlist.

Halo 2: Complete Outskirts.

Halo CE: Beat the par score on all Halo: CE levels.

Halo 4: Beat the par score on Forerunner.

Halo CE: Complete the level The Pillar of Autumn on Legendary without picking up an overshield.

Halo CE: Finish The Silent Cartographer without shooting, grenades, melee, dying or restarting.

Earn a total of 250 Killjoy medals in matchmade games.

Kill 100 Crawlers.

Win 150 multiplayer games.

Halo 2A MP: On Zenith, personally activate the center energy shield 3 times in one matchmade game.

Halo 2A MP: Get 30 kills with the Hornet in multiplayer.

Halo 4: Beat the par time on Shutdown.

Halo 4: Complete Shutdown.

Halo 3: Beat the par time on The Covenant.

Halo 3: This stuff is your history!

Halo 3: Beat the par time on all Halo 3 levels.