Kill 2000 people.(Multiplayer)

Unlocked: 17 Jun 2011 22:31:27

Win 50 rounds playing online.(Multiplayer)

Unlocked: 14 Jun 2011 00:18:04

Kill 500 people using sniper rifle.(Multiplayer)

Unlocked: 25 May 2011 13:04:27

Collect all secrets.

Unlocked: 12 Jul 2010 13:52:32

Kill 250 people using pistol.(Multiplayer)

Unlocked: 11 Jul 2010 21:42:24

Finish the game on Hard difficulty.

Unlocked: 11 Jul 2010 19:16:40

Finish the game on Normal difficulty.

Unlocked: 10 Jul 2010 00:21:44

Complete Act IV.

Unlocked: 10 Jul 2010 00:19:04

Finish the game on Easy difficulty.

Unlocked: 10 Jul 2010 00:19:02

Kill 250 people using sniper rifle.(Multiplayer)

Unlocked: 09 Jul 2010 22:21:12

Complete Act III.

Unlocked: 09 Jul 2010 15:56:00

Kill a total of 30 enemies with Browning gun.

Unlocked: 09 Jul 2010 14:22:50

Complete Act II.

Unlocked: 08 Jul 2010 19:31:45

Deliver 100 headshots.

Unlocked: 08 Jul 2010 17:37:50

Shoot 5 cable lines using sniper rifles.

Unlocked: 08 Jul 2010 17:33:00

Kill 10 enemies with throwing knives.

Unlocked: 08 Jul 2010 17:19:34

Kill all enemies attacking your pontoon from the riverside on "Weaken The Regime" level.

Unlocked: 08 Jul 2010 16:57:32

Complete Act I.

Unlocked: 08 Jul 2010 16:55:13

Shoot an enemy through a wall.

Unlocked: 08 Jul 2010 16:49:40

Deliver 50 headshots.

Unlocked: 08 Jul 2010 16:27:44

Kill 15 enemies using concentration mode.

Unlocked: 08 Jul 2010 16:02:22

Kill 2 enemies with one grenade.

Unlocked: 08 Jul 2010 15:40:50

Kill 2 enemies with one shot.

Unlocked: 08 Jul 2010 15:38:02

Kill 10 birds.

Unlocked: 08 Jul 2010 15:08:23