Treadhead - Kill 30 Helghast whilst in the tank
Take 30 Helghast lives whilst using the ISA tank
4/13/2011
5:03:10 PM
Very Rare 7.8%
Mechspert - Stomp 10 Helghast
Stomp 10 Helghast with your Exoskeleton in Maelstra Barrens
4/13/2011
4:38:58 PM
Ultra Rare 1.8%
Blade Runner - 75 kills with the knife
Kill 75 Helghast using the knife
4/12/2011
8:28:11 PM
Ultra Rare 4.3%
Melonpopper - 15 headshots using the sniper rifle
Get 15 headshots using the VC32 Sniper Rifle
4/12/2011
6:57:17 PM
Rare 11.8%
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
4/12/2011
6:38:29 PM
Rare 12.4%
Giantslayer - Kill the Heavy within 1 minute
Kill the Blood Meridian heavy in under 1 minute
4/12/2011
6:32:06 PM
Rare 32.3%
Fast Emerald
Beat Emerald Hill Zone 1 in under 35 seconds in single-player or co-op mode.
4/11/2011
7:55:26 PM
Ultra Rare 4.7%
The Running Man
Earn a Gold Star in a Survival Training Mission Without Using Any Weapons
4/8/2011
9:50:49 PM
Ultra Rare 4.9%
Total Carnage
Kill 5 Opponents in a Row Without Dying in an Online Multiplayer Game
4/8/2011
8:50:25 PM
Very Rare 5.9%
Can Opener - Destroy a Helghast APC
Destroy any Helghast APC during battle
4/3/2011
2:19:17 PM
Rare 29.5%