Kill 100 enemies while in the power mode of Overkill.

Unlocked: 23 Jan 2010 01:19:56

Earn one billion dollars in total in ranked matches.

Unlocked: 23 Jan 2010 00:00:30

Complete a ranked match without ever needing to be revived.

Unlocked: 17 Jan 2010 21:50:16

Complete 20 minor objectives in a ranked match.

Unlocked: 02 Sep 2009 20:59:01

Buy the 'pack 8' gun pack in a multiplayer ranked match

Unlocked: 03 May 2009 23:20:48

Final blow to Dalton is a headshot with a pimped .44 MODEL 29 handgun

Unlocked: 03 May 2009 22:44:46

Kill Dalton in less than 40 seconds

Unlocked: 03 May 2009 22:36:07

Completed Mission 8 as Professional.

Unlocked: 03 May 2009 21:36:06

Completed Mission 7 as Professional.

Unlocked: 20 Mar 2009 21:06:23

Collect all of the information cases in the entire game.

Unlocked: 09 Mar 2009 21:16:42

Kill 75 enemies while in the stealth mode of Overkill.

Unlocked: 09 Mar 2009 20:38:04

Kill 50 enemies total in Co-op Riot Shield.

Unlocked: 09 Mar 2009 20:29:11

Kill 100 enemies total using Sniper Rifles.

Unlocked: 09 Mar 2009 18:21:23

Completed Mission 6 as Contractor or higher.

Unlocked: 17 Oct 2008 21:28:44

Complete all missions as a Professional.

Unlocked: 17 Oct 2008 21:28:42

Completed Mission 5 as Contractor or higher.

Unlocked: 03 Oct 2008 21:51:00

Destroy 300 destructible objects in Mission 7,8

Unlocked: 03 Oct 2008 20:07:56

Completed Mission 4 as Contractor or higher.

Unlocked: 26 Sep 2008 21:46:18

Completed Mission 3 as Contractor or higher.

Unlocked: 26 Sep 2008 20:46:17

Earn one million dollars in total over the course of campaign mode.

Unlocked: 21 Sep 2008 20:30:53

Kill 150 enemies total using Handguns.

Unlocked: 21 Sep 2008 19:11:24

Kill 250 enemies total using Shotguns.

Unlocked: 21 Sep 2008 14:32:48

Completed Mission 2 as Contractor or higher.

Unlocked: 20 Sep 2008 19:29:29

Kill 25 enemies total using RPGs.

Unlocked: 20 Sep 2008 19:26:58

Kill 25 Heavy Armor enemies.

Unlocked: 20 Sep 2008 18:59:58

Completed Mission 1 as Contractor or higher.

Unlocked: 20 Sep 2008 18:36:50

Finish playing a versus ranked match.

Unlocked: 19 Sep 2008 20:27:31

Win a ranked match without purchasing any additional weapons.

Unlocked: 19 Sep 2008 20:27:31

Kill 5 enemies total using Co-op Snipe.

Unlocked: 19 Sep 2008 19:24:11

Kill 250 enemies total using SMGs.

Unlocked: 19 Sep 2008 17:05:41

Kill 25 Martyrs by shooting the Bomb Packs on their chests.

Unlocked: 16 Sep 2008 18:45:52

Drag and heal your partner 25 times.

Unlocked: 14 Sep 2008 21:27:39

Kill 30 enemies using the Riot Shield melee attack

Unlocked: 14 Sep 2008 21:26:47

Kill 250 enemies total using Machine Guns.

Unlocked: 14 Sep 2008 20:39:41

Spend 1 minute straight at full Aggro.

Unlocked: 09 Aug 2008 16:29:05

Purchase every mask variant.

Unlocked: 09 Aug 2008 16:21:49

Purchase the MP7, M134, DAO-X Protecta, MGL MK-X, and the M107 Light Fifty.

Unlocked: 09 Aug 2008 16:14:40

Complete all missions with the Partner AI.

Unlocked: 09 Aug 2008 16:10:19

Purchase 3 weapons.

Unlocked: 09 Aug 2008 16:10:18

Kill 50 enemies total in Back-to-Back.

Unlocked: 09 Aug 2008 12:19:38

Kill 250 enemies total using Assault Rifles.

Unlocked: 08 Aug 2008 19:41:49

Heal your partner for the first time. Training does not count.

Unlocked: 02 Aug 2008 20:13:24

Kill 50 enemies total using the Melee Attack.

Unlocked: 02 Aug 2008 20:04:49

Win every stage of a ranked three round SSC Challenge match

Destroy 500 barrels in ranked SSC Challenge matches

Win a ranked SSC Challenge match

Achieve 75% accuracy at the conclusion of a ranked three round SSC Challenge match