Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
6/9/2010
7:02:07 PM
Common 57.6%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
6/9/2010
7:01:50 PM
Rare 39.8%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
6/9/2010
6:52:10 PM
Rare 25.3%
Old Faithful
Kill 400 enemies with assault rifles, submachine guns or shotguns
1/14/2010
7:11:08 PM
Rare 43.1%
