Shock Therapy
Impale an enemy with the Javelin Gun and use its Alt-Fire to shock 3 others (single player only)
2/12/2011
7:18:54 AM
Rare 17.5%
Safari Hunter - Kill each enemy infantry type with a melee attack
Kill one of each enemy infantry type with a melee attack
2/8/2011
6:51:27 PM
Ultra Rare 2.5%
Stick Around - Nail 20 Helghast to the wall
Nail 20 Helghast to a wall using the Boltgun VC-21
2/8/2011
1:39:31 PM
Ultra Rare 3.7%
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
2/7/2011
6:55:07 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
2/7/2011
6:54:49 PM
Very Rare 5.4%
Fragmerchant - Kill 5 Helghast using a single grenade
Kill 5 Helghast at once using a single frag grenade
2/7/2011
6:54:44 PM
Very Rare 5.8%
Giantslayer - Kill the Heavy within 1 minute
Kill the Blood Meridian heavy in under 1 minute
2/7/2011
5:46:04 PM
Rare 32.3%
Untouchable
Complete all missions on any difficulty level without dying
2/7/2011
4:37:57 PM
Ultra Rare 1.1%