Elementalslayer - Kill the ArcTrooper within 1 minute 30 seconds
Kill the Tharsis Refinery ArcTrooper in under 1 minute 30 seconds
5/4/2009
9:05:45 PM
Rare 28.2%
Run and Gunner - Kill 3 Helghast with one burst of assault rifle fire
Kill 3 Helghast using an M82 or StA52 assault rifle without releasing the trigger
5/4/2009
7:49:13 PM
Rare 12.4%
Fragmartyr - Kill 2 Helghast whilst taking your own life
Kill 2 Helghast at once and take your own life using a single frag grenade
5/4/2009
7:48:11 PM
Very Rare 5.4%
Untouchable
Complete all missions on any difficulty level without dying
5/4/2009
7:43:44 PM
Ultra Rare 1.1%
Fragmerchant - Kill 5 Helghast using a single grenade
Kill 5 Helghast at once using a single frag grenade
5/3/2009
7:55:41 PM
Very Rare 5.8%
Stick Around - Nail 20 Helghast to the wall
Nail 20 Helghast to a wall using the Boltgun VC-21
5/3/2009
5:45:27 PM
Ultra Rare 3.7%
Barrel of Death - Kill 3 Helghast using your environment
Kill 3 Helghast at once using the surrounding environment
5/3/2009
5:41:15 PM
Rare 25.3%
Iconoclast - Destroy all symbols
Destroy all Helghast symbols within the game
5/3/2009
6:54:14 AM
Ultra Rare 1.3%