Clean Cut
Sever all three tentacles of a Lurker with one Line Gun Primary Fire shot (single player only)
3/22/2012
10:34:11 PM
Rare 21.7%
Going for Distance
Impale an enemy and make him fly through the air for 17 meters - it must stick to the surface
3/22/2012
5:25:53 PM
Rare 30.7%
A Precursor
In the Poker Room of Prison, kill all 3 enemies with headshots before slo-mo ends
3/18/2012
11:47:50 PM
Very Rare 9.2%
I F.E.A.R. Nothing!
Finish a wave of Contractions on INSANE without anyone going into Last Stand
3/18/2012
4:43:39 PM
Ultra Rare 2.1%
Supreme Challenger
Complete 500 total challenges between all categories.
3/18/2012
4:25:00 PM
Ultra Rare 2.9%
Mission... accomplished?
Finish the Campaign on any difficulty (all Intervals complete)
3/11/2012
12:34:24 AM
Rare 27.4%
