Two Birds with One Stone
Kill 2 enemies with a single bullet in Single Player or Special Ops.
4/4/2010
6:39:30 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.
4/4/2010
6:14:50 AM
Common 54.5%
Throw a Six and a Half
On Hardened or Veteran difficulty, complete a level without dying. (Solo only)
1/21/2010
8:27:45 PM
Very Rare 5.6%
Breaking And Entering
Gain access to Administration after it is locked down by the Joker
9/16/2009
11:27:50 PM
Common 59.7%
Malpractice Needs More Practice
Survive the onslaught from the deformed Joker henchman
9/15/2009
5:51:10 AM
Common 87.1%
Leave No Man Behind
Rescue the guards and henchman from the Joker toxin in Decontamination
9/15/2009
5:42:37 AM
Common 84.0%
Blue Ribbon
Complete a 4-player Competitive Co-Op match in 1st place. (Online co-op Only)
1/22/2009
5:29:19 AM
Very Rare 5.2%
Get Your Right Foot Wet
Complete a match in Competitive Co-Op mode. (Online co-op only)
1/11/2009
6:04:05 AM
Rare 16.8%