Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
2/24/2010
10:52:58 AM
Rare 39.8%
Ten plus foot-mobiles
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.
2/8/2010
8:08:34 PM
Rare 45.1%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
1/25/2010
7:14:40 PM
Rare 25.3%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
1/25/2010
7:00:10 PM
Common 57.6%
Ultimate Knockout
From the gassed state, KO an opponent in any mode.
12/21/2009
9:36:56 PM
Common 76.3%