I See You
Kill 50 enemies through solid matter with the Auger in the single player Campaign.
1/17/2009
2:07:32 AM
Rare 37.4%
They Go "Boom"
Get 30 kills with the Magnum secondary fire in the single player Campaign.
1/16/2009
2:55:26 AM
Rare 17.4%
Alchemist Special
Defeat the Alchemist without using the acrobatic attack.
12/26/2008
11:33:30 PM
Rare 41.4%
Sharpshooter
Get 30 headshots while scoped in with the Fareye or Marksman in the single player Campaign.
12/24/2008
10:36:54 PM
Rare 31.1%
The Bigger They Are
Defeat the Leviathan in the single player Campaign.
12/24/2008
10:07:40 PM
Rare 39.8%
For Close Encounters
Get 10 one-hit head-shot kills with the shotgun in the single player Campaign.
12/24/2008
1:25:33 AM
Rare 22.1%
Specter Recon
Collect 50 pieces of gray tech in the Cooperative campaign.
12/21/2008
4:51:11 AM
Rare 15.6%