Fast Learner
Kill your target and escape your pursuer in less than 10 seconds (Multiplayer Only).
2/20/2011
9:07:18 AM
Rare 16.6%
...And Stay Down
Kill 25 crawling enemies with Stomp (single player only)
2/8/2011
8:07:50 PM
Rare 14.5%
Frozen in Time
Kill 50 Necromorphs while they are in Stasis (single player only)
2/5/2011
8:54:55 PM
Rare 28.0%
