Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
8/18/2010
5:12:52 AM
Rare 34.5%
Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
8/18/2010
4:47:13 AM
Rare 15.2%
Desperado
Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.
8/18/2010
4:28:56 AM
Rare 21.2%
500 m Short Track Hero
Win a gold at 500 m short track speed skating in a single player game.
8/15/2010
1:48:02 PM
Rare 11.1%
No Rest For the Wary
Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
8/14/2010
6:30:05 AM
Rare 25.3%
Three-some
Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
8/1/2010
7:20:01 AM
Common 54.5%
Malpractice Needs More Practice
Survive the onslaught from the deformed Joker henchman
1/16/2010
1:23:43 AM
Common 87.1%
Leave No Man Behind
Rescue the guards and henchman from the Joker toxin in Decontamination
1/16/2010
1:12:22 AM
Common 84.0%
REEEWIINNNNDD!!!
Perform 4 rewinds without missing any icons in any mix on any difficulty.
1/11/2010
12:29:41 AM
Rare 38.0%
Good Times
Earn 10 stars by playing any of the mixes in the Grandmaster Flash Presents setlist.
1/11/2010
12:24:06 AM
Rare 37.7%
The Gift of Music
Unlock a bonus mix on any set list (where available).
1/11/2010
12:09:38 AM
Rare 44.3%
Special Effects!
Turn the effects dial during every Effects Zone in any mix at any difficulty (not in the tutorial).
1/10/2010
2:48:58 PM
Common 72.5%