Vacuum Cleaner
Decompress 20 Necromorphs without getting sucked out yourself
2/1/2011
1:03:49 PM
Very Rare 6.9%
My Boom Stick
Kill 6 enemies at once with Line Gun's Alt-Fire (single player only)
1/31/2011
11:53:07 PM
Rare 10.3%
Going for Distance
Impale an enemy and make him fly through the air for 17 meters - it must stick to the surface
1/31/2011
9:07:29 PM
Rare 30.7%
Shock Therapy
Impale an enemy with the Javelin Gun and use its Alt-Fire to shock 3 others (single player only)
1/31/2011
9:04:43 PM
Rare 17.5%
Epic Dismemberment
Dismember 2,500 Necromorph Limbs (single player only)
1/31/2011
7:46:02 PM
Rare 13.8%
The Sampler Platter
Kill a Necromorph with every Weapon in the game (single player only).
1/31/2011
5:13:25 PM
Very Rare 8.7%
Clean Cut
Sever all three tentacles of a Lurker with one Line Gun Primary Fire shot (single player only)
1/31/2011
4:53:47 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
1/31/2011
2:39:10 PM
Rare 11.3%
...And Stay Down
Kill 25 crawling enemies with Stomp (single player only)
1/31/2011
1:40:46 PM
Rare 14.5%
Skill - Accuracy
Complete any level with at least 80% Weapon Accuracy
1/31/2011
11:56:33 AM
Very Rare 6.9%
That's Quite A Mouthful
Complete Chapter 2: "Another Day at the Office"
1/31/2011
11:56:26 AM
Rare 38.7%
