For Close Encounters
Get 10 one-hit head-shot kills with the shotgun in the single player Campaign.
12/3/2008
1:16:29 PM
Rare 22.1%
The Bigger They Are
Defeat the Leviathan in the single player Campaign.
12/2/2008
10:05:54 PM
Rare 39.8%
Nowhere to Hide
Tag and kill 30 enemies with the Bullseye secondary fire in the single player Campaign.
12/2/2008
3:46:23 PM
Rare 15.4%