Clean Cut
Sever all three tentacles of a Lurker with one Line Gun Primary Fire shot (single player only)
1/28/2011
3:52:41 PM
Rare 21.7%
C-Section
Knock down an enemy with Contact Beam Alt-Fire then kill it with Primary Fire before it stands up
1/28/2011
12:28:07 PM
Rare 11.3%
...And Stay Down
Kill 25 crawling enemies with Stomp (single player only)
1/28/2011
12:27:08 PM
Rare 14.5%
Taste of your own Medicine
TK Impale a live Slasher to a surface using a Slasher's arm - it must stick to the surface
1/27/2011
12:48:04 PM
Rare 40.8%