Complete all campaign acts on Insane Difficulty
Unlocked: 30 Jan 2009 23:15:05
Play 1999 rounds of multiplayer (any mode)
Unlocked: 22 Jan 2009 11:04:38
Capture 10 meatflags in Submission (not Custom)
Unlocked: 21 Jan 2009 20:29:59
Recover all 41 collectibles (any difficulty)
Unlocked: 14 Jan 2009 18:39:14
Kill 10 enemies with a grenade while down but not out (any mode)
Unlocked: 07 Jan 2009 18:49:10
Use a meatshield to save your life 10 times (any mode)
Unlocked: 07 Jan 2009 18:25:03
Melee 10 enemies down with the Boomshield equipped (any mode)
Unlocked: 07 Jan 2009 18:14:18
Kill an enemy with every weapon in the game (any mode)
Unlocked: 07 Jan 2009 18:05:41
Perform all 11 unique executions on a downed enemy
Unlocked: 07 Jan 2009 17:55:51
Kill 30 enemies with the Scorcher Flamethrower (any mode)
Unlocked: 07 Jan 2009 17:35:51
Melee 30 Tickers (any mode)
Unlocked: 07 Jan 2009 17:25:08
Kill 30 enemies with the heavy Mortar (any mode)
Unlocked: 02 Jan 2009 15:59:51
Win 10 rounds of Guardian as the leader (not Custom)
Unlocked: 25 Dec 2008 23:44:22
Survive all 50 waves of Horde (any difficulty, any map)
Unlocked: 14 Dec 2008 22:41:04
Kill 30 enemies with a cover mounted Mulcher (any mode)
Unlocked: 14 Dec 2008 22:38:33
Win 3 matches of King of the Hill (not Custom)
Unlocked: 14 Dec 2008 00:42:57
Win a multiplayer match on each of the 10 shipped maps (any mode)
Unlocked: 10 Dec 2008 22:11:20
Win 3 matches of Wingman (not Custom)
Unlocked: 05 Dec 2008 23:04:24
Win 10 chainsaw duels (any mode)
Unlocked: 30 Nov 2008 23:26:36
Successfully complete the 5 lessons of multiplayer Training Grounds
Unlocked: 30 Nov 2008 00:41:06
Kill 10 enemies with a planted grenade (any mode)
Unlocked: 29 Nov 2008 20:14:52
Complete all campaign acts on Hardcore Difficulty
Unlocked: 22 Nov 2008 23:09:50
Complete all acts in Co-op on any difficulty (Marcus or Dom)
Unlocked: 22 Nov 2008 23:00:35
Complete all campaign acts on Casual Difficulty
Unlocked: 22 Nov 2008 22:47:31
Complete all campaign acts on Normal Difficulty
Unlocked: 22 Nov 2008 22:47:31
Story progression in Act 5, Chapter 2
Unlocked: 22 Nov 2008 22:29:46
Story progression in Act 5, Chapter 1
Unlocked: 22 Nov 2008 22:19:18
Story progression in Act 3, Chapter 3
Unlocked: 19 Nov 2008 18:15:07
Heartbroken
10Story progression in Act 2, Chapter 6
Unlocked: 19 Nov 2008 17:51:09
Story progression in Act 2, Chapter 4
Unlocked: 16 Nov 2008 22:58:04
Pack Rat
15Recover 20 collectibles (any difficulty)
Unlocked: 16 Nov 2008 21:55:15
Complete 10 chapters in Co-op on any difficulty (Marcus or Dom)
Unlocked: 16 Nov 2008 21:34:23
Freebaird!
10Story progression in Act 2, Chapter 5
Unlocked: 15 Nov 2008 21:17:41
Story progression in Act 4, Chapter 6
Unlocked: 14 Nov 2008 15:42:39
Recover 5 collectibles (any difficulty)
Unlocked: 14 Nov 2008 15:01:25
Story progression in Act 4, Chapter 3
Unlocked: 14 Nov 2008 14:49:05
Story progression in Act 4, Chapter 2
Unlocked: 14 Nov 2008 14:24:43
Water Sports
10Story progression in Act 3, Chapter 6
Unlocked: 14 Nov 2008 14:06:56
Story progression in Act 3, Chapter 4
Unlocked: 14 Nov 2008 13:46:33
Story progression in Act 1, Chapter 6
Unlocked: 12 Nov 2008 23:05:35
Survive the first 10 waves of Horde (any difficulty, any map)
Unlocked: 08 Nov 2008 21:50:07
Perform 30 perfect Active Reloads (any mode)
Unlocked: 08 Nov 2008 10:14:36
Story progression in Act 1, Chapter 4
Unlocked: 07 Nov 2008 23:21:30
Submit a spectator photo
Unlocked: 07 Nov 2008 17:45:50
Story progression in Act 5, Chapter 5
Unlocked: 07 Nov 2008 15:36:24
Complete 1 chapter in Co-op on any difficulty (Marcus or Dom)
Unlocked: 07 Nov 2008 15:33:00
Brumak Rodeo
10Story progression in Act 5, Chapter 4
Unlocked: 07 Nov 2008 15:21:24
It's a Trap!
10Story progression in Act 1, Chapter 2
Unlocked: 07 Nov 2008 15:05:04
Train the rook (any difficulty)
Unlocked: 07 Nov 2008 14:45:30
Kill 100,000 enemies (any mode)
Win an Annex match on each Flashback and Combustible Map Pack map (not Custom)
Unlocked: 01 Mar 2009 21:04:02
Survive first 10 Horde waves on Combustible Map Pack maps as a team
Unlocked: 24 Jan 2009 21:13:11
Win a Wingman match on each of the 3 Combustible Map Pack maps
Unlocked: 22 Jan 2009 21:38:57
Win a multiplayer match on each of the 3 Combustible Map Pack maps (any mode except Wingman)
Unlocked: 21 Jan 2009 20:47:01
Complete waves 1 through 10 on all Flashback Map Pack maps in Horde (any difficulty)
Unlocked: 25 Jan 2009 21:54:05
Win a multiplayer match on each of the 5 Flashback Map Pack maps (any mode except Wingman)
Unlocked: 22 Jan 2009 10:21:37
Win a Wingman match on each of the 5 Flashback Map Pack maps
Unlocked: 21 Jan 2009 23:07:24
Earn enough multiplayer experience to reach level 25 (not Custom)
Unlocked: 14 Apr 2009 22:40:05
Earn enough multiplayer experience to reach level 15 (not Custom)
Unlocked: 28 Mar 2009 23:36:29
Rookie Gear
10Earn enough multiplayer experience to reach level 5 (not Custom)
Unlocked: 25 Mar 2009 23:09:01
Veteran Gear
75Reach level 100 and win a match on each of the 4 Snowblind Map Pack maps (not Custom)
Unlocked: 25 Jul 2010 08:48:45
Reach level 50 and play a match on each of the 4 Snowblind Map Pack maps (not Custom)
Unlocked: 27 Jun 2009 22:11:17
Complete waves 1 through 50 on any Snowblind Map Pack map in Horde (any difficulty)
Unlocked: 24 Apr 2009 22:39:43
Complete waves 1 through 10 on all Snowblind Map Pack maps in Horde (any difficulty)
Unlocked: 01 Apr 2009 17:36:37
Play a multiplayer match on each of the 4 Snowblind Map Pack maps (any mode)
Unlocked: 31 Mar 2009 15:21:22
Win a multiplayer match on each of the 4 Snowblind Map Pack maps (any mode)
Unlocked: 31 Mar 2009 15:21:21
Reach level 50 in multiplayer and complete waves 1 - 50 on the Nowhere map in Horde
Unlocked: 02 Aug 2009 19:09:17
Reach level 40 in multiplayer and complete waves 1 - 40 on the Memorial map in Horde
Unlocked: 02 Aug 2009 16:10:36
Reach level 30 in multiplayer and complete waves 1 - 30 on the Allfathers Garden map in Horde
Unlocked: 02 Aug 2009 14:12:48
Kill 25 Bloodmounts with a Scorcher while playing Horde on a Dark Corners Map Pack map
Unlocked: 30 Jul 2009 14:17:20
Reach level 15 in multiplayer and complete waves 1 - 20 on the Sanctuary map in Horde
Unlocked: 29 Jul 2009 18:01:46
Reach level 20 in multiplayer and complete waves 1 - 20 on the Way Station map in Horde
Unlocked: 29 Jul 2009 14:09:01
Reach level 10 in multiplayer and complete waves 1 - 10 on the Highway map in Horde
Unlocked: 28 Jul 2009 14:46:01
Reach level 8 in multiplayer and complete waves 1 - 10 on the War Machine map in Horde
Unlocked: 28 Jul 2009 13:15:46
Complete the "Road to Ruin" deleted scene after choosing the guns blazing option
Unlocked: 28 Jul 2009 12:11:38
Complete the "Road to Ruin" deleted scene in co-op as either Marcus or Dom
Unlocked: 28 Jul 2009 11:51:01
Without being detected, complete the "Road to Ruin" deleted scene after choosing the stealth option
Unlocked: 28 Jul 2009 11:50:59
Play a multiplayer match on each of the 7 Dark Corners Map Pack maps (any mode)
Unlocked: 28 Jul 2009 11:06:21
Win a multiplayer match on each of the 7 Dark Corners Map Pack maps (any mode)
Unlocked: 28 Jul 2009 11:06:19