Halo 4: Complete Dawn.
Kill 100 Elites.
Halo 3: Fight alongside and listen to The Man. The Legend. Chips Dubbo.
Get killed by the Guardians.
Halo 2: Fight alongside the legendary Chips Dubbo and listen to his words.
Halo 2: Complete Cairo Station.
Halo 2: Activate Terminal 1 on Cairo Station.
Halo CE: Complete Halo.
Halo CE: Activate Terminal 2 on Halo.
Kill 100 Grunts.
Complete a campaign mission or a match of multiplayer.
Halo CE: Complete The Pillar of Autumn.
Kill 100 enemies or players.
Halo CE: Fight alongside Chips Dubbo and listen to his words of wisdom.
Kill 500 enemies with traps.
Chain together 100 traversal moves without stopping or touching the ground.
Collect 20 Amps from Floyd.
Completed End of the World.
Achieved Face Level 10.
Completed Big Smile Lee.
Completed all Favors.
Used 10 different firearms to defeat enemies.
Completed all cases.
Used 10 different melee weapons to defeat enemies.
Shot out a cop's tires while fleeing in a police chase.
Completed 50% of all missions, cases, favors, events, jobs and races.
Upgrade the Overcharge vats at every Fort.
Get to the bottom of Fizzco's corporate secrets.
You forged the mythical Excalamune.
Complete a quest from every faction.
Reach Level 99 in Ignatius' epic RPG campaign.
Save Sunset City from Fizzco's second-most powerful robot.
5,000 OD'd Massacred.
You've completed the Tutorial, now go forth and explore a new world!
You've asked the guide for help!
Completed Dockyard Heist.
Unlocked ten Cop Upgrades.
Killed someone with a fish.
Picked a lock, planted a bug, traced a phone, cracked a safe, and took over a spy camera.
Achieved 15 Silver Stat Awards.
Completed half of the open world events.
Achieved Face Level 5.
Achieved 5 Gold Stat Awards.
Kill 100 enemies while bouncing or while in the air.
Kill 500 enemies while at Style Level 3.
Melee 50 enemies while grinding.
That was a lot of pigeons.
Clear Fargarthia of a hidden evil.
Liberate all the comic books for the comic book collector.
Unlock at least one Rank 4 Overdrive.