Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
11/11/2009
1:58:53 AM
Rare 34.5%
Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
11/11/2009
1:18:42 AM
Common 57.6%
Perkaholics Anonymous!
Survive until round 20 without buying a single Perk. (Map Pack 3 only)
9/11/2009
7:52:04 PM
Ultra Rare 4.7%
Pack Addict!
Upgrade 5 weapons at the Pack A Punch Machine. (Map Pack 3 only)
8/31/2009
5:05:11 AM
Very Rare 5.4%
Der Electrician!
Link all teleport pads before round 7. (Map Pack 3 only)
8/30/2009
2:49:16 PM
Very Rare 7.6%
Nothin' But a Good Time
You destroyed 200 objects from the gunner seat in co-op
8/12/2009
7:26:34 PM
Ultra Rare 3.2%
Big Brawler
Get 10 consecutive zombie melee kills before Insta-Kill expires. (Map Pack 2 only)
7/14/2009
10:44:14 PM
Ultra Rare 3.5%