Knock-knock
Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
6/7/2010
7:09:12 PM
Rare 15.2%
Team Creator
Build and save a level with more than one player with the thermometer more than 30% full
3/29/2010
8:15:58 PM
Rare 11.9%
Trendsetter
Place a sticker or a decoration on another player's sackperson
3/29/2010
5:06:46 PM
Rare 37.6%
Dr Frankenstein
Create a living creature with at least 2 eyes, 2 legs or wheels, and a brain
3/28/2010
7:10:55 PM
Rare 15.3%
Socialite
Complete a level online with 3 other players who are not on your friends list
3/26/2010
8:48:41 PM
Rare 18.0%
Steel Fist Master
Defeat 20 enemies with a single punch, after softening them up with gunfire
3/19/2010
3:38:03 PM
Rare 23.2%
Bare-knuckle Expert
Defeat ten enemies in a row with hand-to-hand combat
3/19/2010
1:44:18 PM
Rare 22.5%