Run-and-Gunner
Kill 20 enemies by shooting from the hip (without aiming with the L1 button)
2/26/2010
6:57:42 PM
Rare 22.5%
Steel Fist
Kill five enemies with a single punch, after softening them up with gunfire
2/25/2010
5:21:52 PM
Very Rare 9.4%
Specter Recon
Collect 50 pieces of gray tech in the Cooperative campaign.
2/23/2010
9:10:29 AM
Rare 15.6%
