Killing Spree - Kill 5 Helghast in 15 seconds
Kill 5 Helghast in 15 seconds whilst on foot and maintaining at least 85% health
3/3/2009
8:36:00 PM
Rare 39.3%
Dr Frankenstein
Create a living creature with at least 2 eyes, 2 legs or wheels, and a brain
10/31/2008
8:07:25 PM
Rare 15.3%
Socialite
Complete a level online with 3 other players who are not on your friends list
10/31/2008
10:18:27 AM
Rare 18.0%
