Score over 200,000 points in Firefight on Chasm Ten.
Unlocked: 20 Feb 2012 21:21:08
In Firefight, on any mission, pass the 4th Set on 4-player Heroic LIVE co-op.
Unlocked: 18 Feb 2012 00:38:09
Score over 200,000 points in Firefight on Alpha Site.
Unlocked: 17 Feb 2012 15:47:35
Complete Highway on 4-player Legendary LIVE co-op, with Iron, and no 'Hog or Scorpion.
Unlocked: 17 Feb 2012 14:19:05
Score over 200,000 points in Firefight on Lost Platoon.
Unlocked: 16 Feb 2012 20:33:31
Score over 200,000 points in Firefight on Security Zone.
Unlocked: 16 Feb 2012 16:36:29
Score over 200,000 points in Firefight on Windward.
Unlocked: 16 Feb 2012 15:24:06
Score over 200,000 points in Firefight on Last Exit.
Unlocked: 15 Feb 2012 13:08:23
Finish any level solo on Legendary, on LIVE, with no shots fired or grenades thrown.
Unlocked: 14 Feb 2012 20:36:16
Killing things that are new and different is bad, alone or with another ODST.
Unlocked: 16 Sep 2010 19:56:19
Killing things that are new and different is good, alone or with another ODST.
Unlocked: 15 Sep 2010 21:39:48
Plasma Pistol Overcharge and quickly kill 10 Brutes.
Unlocked: 01 Jul 2010 21:32:28
Audiophile
75Find all Audio Logs, alone or with another ODST.
Unlocked: 27 Jun 2010 16:19:40
Get 10 Spartan Laser kills on ONI Alpha Site.
Unlocked: 27 Jun 2010 15:46:20
Get 15 headshot kills on NMPD HQ.
Unlocked: 27 Jun 2010 14:04:36
All Ears
30Find 15 Audio Logs, alone or with another ODST.
Unlocked: 27 Jun 2010 12:41:22
Score over 200,000 points in Firefight on Rally Point.
Unlocked: 26 Jun 2010 23:01:21
Score over 200,000 points in Firefight on Crater.
Unlocked: 26 Jun 2010 21:59:16
In Firefight, finish a full round without killing a single enemy.
Unlocked: 26 Jun 2010 21:28:55
Complete the Campaign on Heroic difficulty.
Unlocked: 16 Jun 2010 23:57:44
Complete the Campaign on Legendary to unlock a new Firefight character.
Unlocked: 16 Jun 2010 23:57:44
Kill 10 enemies with the Flamethrower on Data Hive.
Unlocked: 16 Jun 2010 22:54:45
Headcase
5Finish any level with at least one Skull activated.
Unlocked: 11 Jun 2010 10:58:07
Complete Coastal Highway on Normal, Heroic, or Legendary to unlock a new Firefight mission.
Unlocked: 11 Jun 2010 10:58:07
Complete the Campaign on Normal difficulty.
Unlocked: 11 Jun 2010 10:58:07
Data Hive
50Complete Data Hive on Normal, Heroic, or Legendary to unlock a new Firefight mission.
Unlocked: 10 Jun 2010 23:15:50
Complete Kikowani Station on Normal, Heroic, or Legendary.
Unlocked: 10 Jun 2010 22:49:01
Super Sleuth
10Find the final clue unraveling the mystery, alone or with another ODST.
Unlocked: 10 Jun 2010 22:32:44
NMPD HQ
30Complete NMPD HQ on Normal, Heroic, or Legendary to unlock a new Firefight character.
Unlocked: 10 Jun 2010 22:26:46
Complete ONI Alpha Site on Normal, Heroic, or Legendary to unlock a new Firefight mission.
Unlocked: 10 Jun 2010 22:05:37
Complete Kizingo Blvd. on Normal, Heroic, or Legendary to unlock a new Firefight character.
Unlocked: 10 Jun 2010 21:49:15
Get 10 Rocket kills on Kizingo Boulevard.
Unlocked: 10 Jun 2010 21:39:13
Get 5 sticky grenade kills in any level.
Unlocked: 24 May 2010 14:02:29
Get 10 Needler supercombine kills on any covenant.
Unlocked: 23 May 2010 12:04:49
Stun a vehicle with an overcharged plasma pistol and quickly kill the driver.
Unlocked: 19 Apr 2010 20:35:21
Tuned In
15Find 3 Audio Logs, alone or with another ODST.
Unlocked: 16 Apr 2010 15:20:23
Kill all Wraiths in Uplift Reserve.
Unlocked: 16 Apr 2010 15:16:35
Gumshoe
10Find the 3rd clue unraveling the mystery, alone or with another ODST.
Unlocked: 16 Apr 2010 13:19:41
Complete Uplift Reserve on Normal, Heroic, or Legendary to unlock a new Firefight character.
Unlocked: 16 Apr 2010 13:05:58
Trade weapons with a fellow character.
Unlocked: 16 Apr 2010 12:56:25
Listener
5Find the first Audio Log.
Unlocked: 16 Apr 2010 12:18:57
Tayari Plaza
30Complete Tayari Plaza on Normal, Heroic, or Legendary to unlock a new Firefight character.
Unlocked: 16 Apr 2010 12:14:05
Get 10 automag headshot kills in any level.
Unlocked: 16 Apr 2010 11:49:29
Find the first clue unraveling the mystery.
Unlocked: 16 Apr 2010 11:46:01
Tourist
5Access and download the city map to your VISR.
Unlocked: 16 Apr 2010 11:38:24
Kill 5 enemies while using VISR mode.
Unlocked: 16 Apr 2010 11:29:19
Heal Up
5Find the first Medical Kiosk and heal yourself.
Unlocked: 16 Apr 2010 11:26:58