Win a ranked match without purchasing any additional weapons.

Unlocked: 31 May 2011 08:33:38

Earn one billion dollars in total in ranked matches.

Unlocked: 31 May 2011 08:18:15

Complete a ranked match without ever needing to be revived.

Unlocked: 27 May 2011 00:50:39

Complete 20 minor objectives in a ranked match.

Unlocked: 26 May 2011 00:46:45

Finish playing a versus ranked match.

Unlocked: 26 May 2011 00:46:43

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

Unlocked: 26 May 2011 00:45:19

Kill 50 enemies total in Co-op Riot Shield.

Unlocked: 02 Jul 2009 19:26:16

Destroy 300 destructible objects in Mission 7,8

Unlocked: 02 Jul 2009 17:55:26

Kill 75 enemies while in the stealth mode of Overkill.

Unlocked: 02 Jul 2009 17:54:13

Kill 25 Heavy Armor enemies.

Unlocked: 30 Jun 2009 14:58:18

Kill 250 enemies total using Machine Guns.

Unlocked: 30 Jun 2009 14:32:18

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

Unlocked: 30 Jun 2009 01:43:07

Kill 25 enemies total using RPGs.

Unlocked: 30 Jun 2009 01:27:59

Drag and heal your partner 25 times.

Unlocked: 30 Jun 2009 01:12:20

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

Unlocked: 30 Jun 2009 01:07:50

Completed Mission 6 as Contractor or higher.

Unlocked: 30 Jun 2009 00:57:34

Complete all missions with the Partner AI.

Unlocked: 30 Jun 2009 00:57:33

Kill 250 enemies total using Shotguns.

Unlocked: 30 Jun 2009 00:43:05

Collect all of the information cases in the entire game.

Unlocked: 30 Jun 2009 00:38:07

Purchase 3 weapons.

Unlocked: 29 Jun 2009 22:12:33

Completed Mission 5 as Contractor or higher.

Unlocked: 29 Jun 2009 22:07:15

Kill 50 enemies total using the Melee Attack.

Unlocked: 29 Jun 2009 21:29:53

Completed Mission 4 as Contractor or higher.

Unlocked: 29 Jun 2009 20:46:20

Purchase every mask variant.

Unlocked: 29 Jun 2009 17:45:57

Completed Mission 3 as Contractor or higher.

Unlocked: 29 Jun 2009 17:42:44

Kill 150 enemies total using Handguns.

Unlocked: 29 Jun 2009 04:10:07

Kill 250 enemies total using SMGs.

Unlocked: 29 Jun 2009 03:59:29

Spend 1 minute straight at full Aggro.

Unlocked: 29 Jun 2009 03:28:48

Kill 5 enemies total using Co-op Snipe.

Unlocked: 29 Jun 2009 03:24:27

Kill 100 enemies total using Sniper Rifles.

Unlocked: 29 Jun 2009 02:59:19

Completed Mission 2 as Contractor or higher.

Unlocked: 29 Jun 2009 02:33:01

Kill 250 enemies total using Assault Rifles.

Unlocked: 29 Jun 2009 02:08:34

Kill 50 enemies total in Back-to-Back.

Unlocked: 29 Jun 2009 01:39:13

Completed Mission 1 as Contractor or higher.

Unlocked: 29 Jun 2009 01:32:49

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

Unlocked: 29 Jun 2009 01:07:56

Complete all missions as a Professional.

Unlocked: Offline

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

Unlocked: Offline

Kill 100 enemies while in the power mode of Overkill.

Unlocked: Offline

Kill 30 enemies using the Riot Shield melee attack

Unlocked: Offline

Completed Mission 7 as Professional.

Unlocked: Offline

Completed Mission 8 as Professional.

Unlocked: Offline

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

Unlocked: Offline

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

Kill Dalton in less than 40 seconds