Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
12/17/2010
9:14:33 AM
Common 57.6%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
12/17/2010
7:45:30 AM
Common 54.5%
Construction Expert
Build 10 towers in less than 30 seconds upon entering a stage
10/14/2010
8:07:20 PM
Rare 17.1%
