Skunked!
10Win a game of Invasion in the 1st phase.
Unlocked: 02 Jun 2012 22:58:52
Let a teammate spawn on you 5 times in an Invasion Matchmaking game.
Unlocked: 02 Jun 2012 22:03:33
As an Elite, kill 5 Spartan players in Matchmaking.
Unlocked: 28 May 2012 20:19:16
Earn a Killing Spree in multiplayer Matchmaking.
Unlocked: 27 May 2012 20:05:39
Yes, Sensei
10Earn a First Strike Medal in a Matchmaking game.
Unlocked: 27 May 2012 20:03:18
Make It Rain
10Purchase an item from the Armory that requires the rank of Lt. Colonel.
Unlocked: 26 May 2012 17:54:18
Reach the rank of Captain in the UNSC.
Unlocked: 24 May 2012 16:33:15
Complete each Campaign Mission on Legendary - alone.
Unlocked: 19 May 2012 23:00:12
Complete the Campaign on Legendary difficulty.
Unlocked: 19 May 2012 23:00:12
Complete the 10th mission on Normal or harder.
Unlocked: 19 May 2012 23:00:12
Complete the Campaign on Heroic difficulty.
Unlocked: 19 May 2012 23:00:12
Complete the Campaign on Normal difficulty.
Unlocked: 19 May 2012 23:00:12
Perform an Assassination against an Elite to survive a fall that would've been fatal.
Unlocked: 17 May 2012 21:31:38
Complete the 9th mission on Normal or harder.
Unlocked: 17 May 2012 20:38:11
Finish the 9th mission on Legendary with the Scorpion intact.
Unlocked: 17 May 2012 19:31:40
Complete the 8th mission on Normal or harder.
Unlocked: 17 May 2012 17:30:46
Kill 3 of the anti-aircraft batteries during the 8th mission.
Unlocked: 17 May 2012 17:20:53
Complete the 7th mission on Normal or harder.
Unlocked: 17 May 2012 15:14:51
Advance any Commendation to its Silver state.
Unlocked: 17 May 2012 15:09:49
Destroy the Corvette's engines & escort in under 3 minutes in the 6th mission on Heroic or harder.
Unlocked: 16 May 2012 16:38:07
Complete the 6th mission on Normal or harder.
Unlocked: 16 May 2012 16:20:03
Perform an Assassination on an enemy.
Unlocked: 16 May 2012 15:19:28
Complete all of the Daily Challenges in a given day.
Unlocked: 15 May 2012 20:28:15
Kill 10 enemies in Firefight or Campaign with a supercombine explosion.
Unlocked: 15 May 2012 16:48:41
Score Attack
10Score 15,000 points in Score Attack Firefight Matchmaking.
Unlocked: 15 May 2012 16:12:27
Complete a Weekly Challenge.
Unlocked: 15 May 2012 15:36:18
Kill 2 vehicles at once with the Target Locator during the 3rd mission.
Unlocked: 14 May 2012 22:55:23
Clear the 2nd mission without setting foot in a drivable vehicle.
Unlocked: 14 May 2012 22:18:08
Swap Meet
10Trade weapons with an AI ally in Campaign.
Unlocked: 14 May 2012 22:15:28
Kill 10 Enemies in a Firefight or Campaign session with the M6G pistol.
Unlocked: 14 May 2012 21:57:53
Purchase any item from the Armory.
Unlocked: 14 May 2012 00:42:05
Using the File Browser upload a file to your File Share.
Unlocked: 14 May 2012 00:32:42
Recommend a file to someone.
Unlocked: 14 May 2012 00:24:21
To War
10Complete the 5th mission on Normal or harder.
Unlocked: 14 May 2012 00:16:55
Hijack a Banshee during the Reach Campaign.
Unlocked: 14 May 2012 00:11:58
Kill 10 enemies in a Firefight or Campaign session with the DMR.
Unlocked: 14 May 2012 00:08:32
Kill the Elite Zealot before he can escape during the 5th mission.
Unlocked: 13 May 2012 23:55:13
Complete the 4th mission on Normal or harder.
Unlocked: 13 May 2012 23:28:11
Complete the 3rd mission on Normal or harder.
Unlocked: 13 May 2012 23:09:52
Use a Health Pack to recover life after taking body damage.
Unlocked: 13 May 2012 23:03:21
Complete the 2nd mission on Normal or harder.
Unlocked: 13 May 2012 22:41:25
Kill 7 Moa during the 2nd mission of the Campaign.
Unlocked: 13 May 2012 22:28:07
Reach the rank of Corporal in the UNSC.
Unlocked: 13 May 2012 17:45:52
Complete a Firefight set on Legendary without dying.
Unlocked: 13 May 2012 17:44:32
Score 1,000,000 points in Firefight on any map.
Unlocked: 13 May 2012 17:43:16
Earn a Killionaire medal in Firefight.
Unlocked: 13 May 2012 17:42:51
Score 200,000 points in Firefight on any map.
Unlocked: 13 May 2012 17:34:54
Lucky Me
25Earn a Triple Kill while Jetpacking in Campaign, Firefight or Matchmaking.
Unlocked: 13 May 2012 17:34:44
Firestarter
10Score 50,000 points in Firefight on any map.
Unlocked: 13 May 2012 17:30:58
Noble 1: Kill a player at long range with the DMR in a matchmade Slayer game.
Unlocked: 22 Jun 2012 21:34:20
Noble 1: Blow up the research facility in a matchmade Invasion game on Breakpoint.
Unlocked: 01 Jun 2012 01:09:46
Noble 1: Earn a Double Kill from the Grave in multiplayer Matchmaking.
Unlocked: 28 May 2012 21:30:03
Noble 1: Destroy a vehicle using Armor Lock in a matchmade game.
Unlocked: 27 May 2012 21:27:54
Noble 1: Earn a kill in a matchmade Rocket Race game.
Unlocked: 27 May 2012 21:06:09
Both Barrels
50Noble 1: Earn a Double Kill with the shotgun in multiplayer Matchmaking.
Unlocked: 27 May 2012 20:56:18
Noble 1: Collect all of the flags in a matchmade Stockpile game.
Unlocked: 27 May 2012 20:54:51
Defiant: Assassinate a player that just exited Armor-Lock in a matchmade game.
Unlocked: 03 Jun 2012 23:07:19
All Alone
10Defiant: Be the last surviving uninfected player in a matchmade Infection game.
Unlocked: 28 May 2012 22:06:22
Defiant: Prevent the attacking team from touching the flag in a matchmade 1-Flag CTF game.
Unlocked: 28 May 2012 21:53:54
Defiant: Capture two flags from an enemy capture zone in a matchmade Stockpile game.
Unlocked: 28 May 2012 14:33:09
Defiant: Successfully return two flags in a matchmade CTF game.
Unlocked: 28 May 2012 14:27:38
Defiant: Kill 3 players with the Oddball in a matchmade Oddball game.
Unlocked: 28 May 2012 14:24:06
Anniversary: Run over 5 people with a vehicle in a matchmade game.
Unlocked: 22 Jun 2012 21:56:04
Anniversary: Capture 10 skulls at once in a matchmade Headhunter game.
Unlocked: 28 May 2012 22:53:09
Anniversary: Infect 3 players in a single round in a matchmade Infection game.
Unlocked: 28 May 2012 22:15:24
Dive Bomber
50Anniversary: Perform a Beat Down on an enemy player while using the Jetpack during a matchmade game.
Unlocked: 28 May 2012 21:07:34
Anniversary: Stick and kill the flag carrier with a Plasma Grenade in a matchmade game.
Unlocked: 27 May 2012 20:44:24
Anniversary: Kill an enemy with their own Plasma Grenade that is stuck to you in a matchmade game.
Unlocked: 27 May 2012 20:17:23
Top Shot
50Anniversary: Get 3 headshot kills in a row in a matchmade game.
Unlocked: 27 May 2012 20:14:43