Ten plus foot-mobiles
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.
11/15/2009
3:21:34 PM
Rare 45.1%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
11/12/2009
5:07:37 PM
Common 54.5%
The Harder They Fall
Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.
11/12/2009
4:56:25 PM
Rare 30.0%
Grind it Out
Win a match with 10 men Online or when playing on Professional difficulty or higher
9/30/2009
8:29:14 PM
Rare 32.2%
Keep It Cool
Achieve a 'cool' ranking on every line of a 'normal' length song
9/17/2009
2:58:34 PM
Ultra Rare 2.9%
It's a Trap!
Kill at least one zombie with three different traps in a single round. (Map Pack 2 only)
7/30/2009
11:06:26 PM
Ultra Rare 2.7%