Anniversary: Ran over 5 people with a vehicle in a matchmade game.
Defiant: Was the last surviving uninfected player in a matchmade Infection game.
Anniversary: Earned 3 headshots in a row in a matchmade game.
Defiant: Captured two flags from an enemy capture zone in a matchmade Stockpile game.
Defiant: Killed 3 players with the Oddball in a matchmade Oddball game.
Defiant: Returned two flags in a matchmade CTF game.
Noble 1: Killed a player at long range with the DMR in a matchmade Slayer game.
Noble 1: Destroyed a vehicle using Armor Lock in a matchmade game.
Noble 1: Earned a Double Kill from the Grave in multiplayer Matchmaking.
Noble 1: Earned a kill in a matchmade Rocket Race game.
Noble 1: Earned a Double Kill with the shotgun in multiplayer Matchmaking.
Noble 1: Your team blew up the research facility in a matchmade Invasion game on Breakpoint.
Purchased an item from the Armory that required the rank of Lt. Colonel.
Reached the rank of Captain in the UNSC.
Cleared the 2nd mission without setting foot in a drivable vehicle.
Scored 1,000,000 points in a Firefight game.
Killed 7 Moa during the 2nd mission of the Campaign.
Completed every mission in Halo: Reach alone, on Legendary.
Completed the Campaign on Legendary difficulty.
Finished the 9th mission on Legendary with the Scorpion intact.
Completed all of the Daily Challenges in a given day.
Killed 10 enemies in Firefight or Campaign with a supercombine explosion.
Advanced a Commendation to a Silver state.
Won a game of Invasion in the 1st phase.
Performed an Assassination against an Elite to survive a fall that would've been fatal.
Killed 2 vehicles at once with the Target Locator during the 3rd mission.
Used the File Browser to upload a file to your File Share.
Completed a Weekly Challenge.
Completed the Campaign on Heroic difficulty.
Destroyed the Corvette's engines & escort in under 3 minutes in the 6th mission on Heroic or harder.
Hijacked a Banshee during the Reach Campaign.
Scored 15,000 points in Score Attack Firefight Matchmaking.
Completed the 10th mission on Normal or harder.
Completed the Campaign on Normal difficulty.
Completed the 9th mission on Normal or harder.
Completed the 8th mission on Normal or harder.
Killed 3 of the anti-aircraft batteries during the 8th mission.
Earned a First Strike Medal in a Matchmaking game.
Completed the 7th mission on Normal or harder.
Completed the 6th mission on Normal or harder.
Completed the 5th mission on Normal or harder.
Killed the Elite Zealot before he escaped during the 5th mission.
Recommended a file to someone.
Completed the 4th mission on Normal or harder.
Completed a Firefight set on Legendary without dying.
Scored 200,000 points in a Firefight game.
Earned a Killionaire medal in Firefight.
Scored 50,000 points in a Firefight game.
Earned a Triple Kill while Jetpacking in Campaign, Firefight or Matchmaking.
Earned a Killing Spree in multiplayer Matchmaking.
Reached the rank of Corporal in the UNSC.
Let a teammate spawn on you 5 times in an Invasion Matchmaking game.
As an Elite, killed 5 Spartan players in Matchmaking.
Completed the 3rd mission on Normal or harder.
Killed 10 enemies in a Firefight or Campaign session with the DMR.
Completed the 2nd mission on Normal or harder.
Killed 10 enemies in a Firefight or Campaign session with the M6G pistol.
Traded weapons with an AI ally in Campaign.
Used a Health Pack to replenish life after taking body damage.
Performed an Assassination on an enemy.
Purchased an item from the Armory.
Noble 1: Your team collected all of the flags in a matchmade Stockpile game.
Defiant: Prevented the attacking team from touching the flag in a matchmade 1-Flag CTF game.
Defiant: Assassinated a player that just exited Armor-Lock in a matchmade game.
Anniversary: Infected 3 players in a single round in a matchmade Infection game.
Anniversary: Killed the flag carrier with a Plasma Grenade in a matchmade game.
Anniversary: Performed a Beat Down on an enemy while using the Jetpack during a matchmade game.
Anniversary: Captured 10 skulls at once in a matchmade Headhunter game.
Anniversary: Killed an enemy with their own grenade that was stuck to you in a matchmade game.
294
2526
215405
8972
1971
409
134
12