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