Clean Cut
Sever all three tentacles of a Lurker with one Line Gun Primary Fire shot (single player only)
2/10/2011
5:33:50 AM
Rare 21.7%
My Boom Stick
Kill 6 enemies at once with Line Gun's Alt-Fire (single player only)
2/8/2011
8:40:43 PM
Rare 10.3%
C-Section
Knock down an enemy with Contact Beam Alt-Fire then kill it with Primary Fire before it stands up
2/8/2011
8:07:53 PM
Rare 11.3%
Skewered in Space
Impale an enemy into a Decompression Window to cause it to blow out
2/8/2011
7:42:40 PM
Rare 11.0%
The Sampler Platter
Kill a Necromorph with every Weapon in the game (single player only).
2/8/2011
6:18:34 AM
Very Rare 8.7%
...And Stay Down
Kill 25 crawling enemies with Stomp (single player only)
1/28/2011
6:48:05 PM
Rare 14.5%
Frozen in Time
Kill 50 Necromorphs while they are in Stasis (single player only)
1/27/2011
2:52:07 AM
Rare 28.0%
Shock Therapy
Impale an enemy with the Javelin Gun and use its Alt-Fire to shock 3 others (single player only)
1/27/2011
2:11:56 AM
Rare 17.5%