C-Section
Knock down an enemy with Contact Beam Alt-Fire then kill it with Primary Fire before it stands up
7/28/2012
3:40:00 PM
Rare 11.3%
Frozen in Time
Kill 50 Necromorphs while they are in Stasis (single player only)
7/27/2012
7:30:33 PM
Rare 28.0%
Skewered in Space
Impale an enemy into a Decompression Window to cause it to blow out
7/27/2012
2:18:22 PM
Rare 11.0%
Shock Therapy
Impale an enemy with the Javelin Gun and use its Alt-Fire to shock 3 others (single player only)
7/27/2012
2:00:41 PM
Rare 17.5%
My Boom Stick
Kill 6 enemies at once with Line Gun's Alt-Fire (single player only)
7/27/2012
12:14:40 AM
Rare 10.3%
...And Stay Down
Kill 25 crawling enemies with Stomp (single player only)
7/27/2012
12:08:19 AM
Rare 14.5%
Going for Distance
Impale an enemy and make him fly through the air for 17 meters - it must stick to the surface
7/26/2012
11:45:50 PM
Rare 30.7%