Reach the rank of Captain in the UNSC.

Unlocked: 16 Feb 2011 10:17 pm

Advance any Commendation to its Silver state.

Unlocked: 13 Feb 2011 05:30 pm

Complete a Weekly Challenge.

Unlocked: 9 Jan 2011 02:33 pm

Complete all of the Daily Challenges in a given day.

Unlocked: 5 Jan 2011 06:05 pm

Win a game of Invasion in the 1st phase.

Unlocked: 5 Jan 2011 04:44 pm

Earn a Killing Spree in multiplayer Matchmaking.

Unlocked: 5 Jan 2011 04:30 pm

Let a teammate spawn on you 5 times in an Invasion Matchmaking game.

Unlocked: 4 Jan 2011 11:17 pm

Earn a First Strike Medal in a Matchmaking game.

Unlocked: 4 Jan 2011 10:47 pm

Score 15,000 points in Score Attack Firefight Matchmaking.

Unlocked: 4 Jan 2011 10:41 pm

As an Elite, kill 5 Spartan players in Matchmaking.

Unlocked: 4 Jan 2011 06:59 pm

Kill 10 enemies in Firefight or Campaign with a supercombine explosion.

Unlocked: 4 Jan 2011 05:25 pm

Clear the 2nd mission without setting foot in a drivable vehicle.

Unlocked: 4 Jan 2011 05:17 pm

Score 1,000,000 points in Firefight on any map.

Unlocked: 4 Jan 2011 04:34 pm

Earn a Killionaire medal in Firefight.

Unlocked: 4 Jan 2011 03:27 pm

Complete a Firefight set on Legendary without dying.

Unlocked: 4 Jan 2011 03:00 pm

Score 200,000 points in Firefight on any map.

Unlocked: 4 Jan 2011 02:57 pm

Score 50,000 points in Firefight on any map.

Unlocked: 4 Jan 2011 02:50 pm

Destroy the Corvette's engines & escort in under 3 minutes in the 6th mission on Heroic or harder.

Unlocked: 4 Jan 2011 02:32 pm

Earn a Triple Kill while Jetpacking in Campaign, Firefight or Matchmaking.

Unlocked: 4 Jan 2011 01:47 pm

Kill 3 of the anti-aircraft batteries during the 8th mission.

Unlocked: 4 Jan 2011 01:33 pm

Complete the 10th mission on Normal or harder.

Unlocked: 4 Jan 2011 12:33 am

Complete the Campaign on Normal difficulty.

Unlocked: 4 Jan 2011 12:33 am

Complete the 9th mission on Normal or harder.

Unlocked: 3 Jan 2011 11:58 pm

Complete the 8th mission on Normal or harder.

Unlocked: 3 Jan 2011 11:14 pm

Complete the 7th mission on Normal or harder.

Unlocked: 3 Jan 2011 10:38 pm

Complete the 6th mission on Normal or harder.

Unlocked: 3 Jan 2011 10:06 pm

Reach the rank of Corporal in the UNSC.

Unlocked: 3 Jan 2011 08:18 pm

Complete the 5th mission on Normal or harder.

Unlocked: 3 Jan 2011 08:14 pm

Kill the Elite Zealot before he can escape during the 5th mission.

Unlocked: 3 Jan 2011 07:52 pm

Complete the 4th mission on Normal or harder.

Unlocked: 3 Jan 2011 07:42 pm

Complete the 3rd mission on Normal or harder.

Unlocked: 3 Jan 2011 07:12 pm

Kill 2 vehicles at once with the Target Locator during the 3rd mission.

Unlocked: 3 Jan 2011 06:17 pm

Trade weapons with an AI ally in Campaign.

Unlocked: 3 Jan 2011 06:04 pm

Using the File Browser upload a file to your File Share.

Unlocked: 3 Jan 2011 06:02 pm

Recommend a file to someone.

Unlocked: 3 Jan 2011 03:32 pm

Kill 7 Moa during the 2nd mission of the Campaign.

Unlocked: 3 Jan 2011 03:03 pm

Complete each Campaign Mission on Legendary - alone.

Unlocked: Offline

Complete the Campaign on Legendary difficulty.

Unlocked: Offline

Purchase any item from the Armory.

Unlocked: Offline

Use a Health Pack to recover life after taking body damage.

Unlocked: Offline

Kill 10 Enemies in a Firefight or Campaign session with the M6G pistol.

Unlocked: Offline

Kill 10 enemies in a Firefight or Campaign session with the DMR.

Unlocked: Offline

Complete the 2nd mission on Normal or harder.

Unlocked: Offline

Perform an Assassination on an enemy.

Unlocked: Offline

Finish the 9th mission on Legendary with the Scorpion intact.

Unlocked: Offline

Hijack a Banshee during the Reach Campaign.

Unlocked: Offline

Perform an Assassination against an Elite to survive a fall that would've been fatal.

Unlocked: Offline

Complete the Campaign on Heroic difficulty.

Unlocked: Offline

Purchase an item from the Armory that requires the rank of Lt. Colonel.

Noble 1: Collect all of the flags in a matchmade Stockpile game.

Unlocked: 20 Feb 2011 11:21 pm

Noble 1: Earn a kill in a matchmade Rocket Race game.

Unlocked: 20 Feb 2011 07:10 pm

Noble 1: Earn a Double Kill from the Grave in multiplayer Matchmaking.

Unlocked: 14 Feb 2011 05:36 pm

Noble 1: Kill a player at long range with the DMR in a matchmade Slayer game.

Unlocked: 11 Feb 2011 06:35 pm

Noble 1: Destroy a vehicle using Armor Lock in a matchmade game.

Unlocked: 30 Jan 2011 05:40 pm

Noble 1: Blow up the research facility in a matchmade Invasion game on Breakpoint.

Unlocked: 30 Jan 2011 02:50 pm

Noble 1: Earn a Double Kill with the shotgun in multiplayer Matchmaking.

Unlocked: 30 Jan 2011 01:39 pm

Defiant: Be the last surviving uninfected player in a matchmade Infection game.

Unlocked: 30 Jul 2017 06:46 pm

Defiant: Prevent the attacking team from touching the flag in a matchmade 1-Flag CTF game.

Unlocked: 30 Jul 2017 11:33 am

Defiant: Assassinate a player that just exited Armor-Lock in a matchmade game.

Unlocked: 22 Jul 2017 08:40 pm

Defiant: Kill 3 players with the Oddball in a matchmade Oddball game.

Unlocked: 3 Jun 2017 07:38 pm

Defiant: Capture two flags from an enemy capture zone in a matchmade Stockpile game.

Unlocked: 3 Jun 2017 06:05 pm

Defiant: Successfully return two flags in a matchmade CTF game.

Unlocked: 3 Jun 2017 05:31 pm

Anniversary: Perform a Beat Down on an enemy player while using the Jetpack during a matchmade game.

Unlocked: 22 Jul 2017 08:05 pm

Anniversary: Run over 5 people with a vehicle in a matchmade game.

Unlocked: 22 Jul 2017 07:25 pm

Anniversary: Capture 10 skulls at once in a matchmade Headhunter game.

Unlocked: 17 Jun 2017 08:46 pm

Anniversary: Infect 3 players in a single round in a matchmade Infection game.

Unlocked: 17 Jun 2017 07:33 pm

Anniversary: Stick and kill the flag carrier with a Plasma Grenade in a matchmade game.

Unlocked: 17 Jun 2017 06:57 pm

Anniversary: Kill an enemy with their own Plasma Grenade that is stuck to you in a matchmade game.

Unlocked: 17 Jun 2017 06:34 pm

Anniversary: Get 3 headshot kills in a row in a matchmade game.

Unlocked: 17 Jun 2017 06:31 pm