Old Faithful
Kill 400 enemies with assault rifles, submachine guns or shotguns
3/15/2010
2:16:19 AM
Rare 43.1%
Some Like it Hot
Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
2/20/2010
11:34:21 PM
Rare 39.8%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
2/20/2010
10:09:19 PM
Common 57.6%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
12/5/2009
9:45:44 PM
Common 54.5%