Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
11/13/2009
11:38:28 AM
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.
11/13/2009
2:05:52 AM
Rare 30.0%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
11/12/2009
11:54:55 PM
Rare 25.3%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
11/12/2009
2:18:49 PM
Common 57.6%
Operational Asset
Earn all 3 stars in at least 5 different Special Op missions.
11/12/2009
2:10:06 PM
Very Rare 9.7%
Ten plus foot-mobiles
Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.
11/11/2009
3:34:37 PM
Rare 45.1%
Gun Shop
Kill at least one zombie with each weapon type in any game mode
11/8/2009
6:36:16 PM
Rare 40.4%
Gas Powered
Complete an entire arena, getting every kill with the Chainsaw
11/8/2009
12:38:56 AM
Common 63.0%
Tour of the City
Complete each arena at least once in the same game in any game mode
11/8/2009
12:16:28 AM
Common 74.4%
Interior Decorator
Kill 25 zombies in any game mode using environmental hazards
11/8/2009
12:12:57 AM
Common 80.1%
Environmental Awareness
Kill a zombie using an environmental hazard in any game mode
11/8/2009
12:00:09 AM
Common 91.8%
More the Merrier
Kill 10 or more zombies at the same time in any game mode
11/7/2009
11:56:16 PM
Common 81.1%
