Treadhead - Kill 30 Helghast whilst in the tank
Take 30 Helghast lives whilst using the ISA tank
8/27/2009
4:24:26 AM
Very Rare 7.8%
Safari Hunter - Kill each enemy infantry type with a melee attack
Kill one of each enemy infantry type with a melee attack
8/27/2009
4:06:33 AM
Ultra Rare 2.5%
Safety First - Shoot off 100 helmets
Shoot off 100 Helghast helmets during battle
8/27/2009
4:06:23 AM
Rare 35.9%
Blade Runner - 75 kills with the knife
Kill 75 Helghast using the knife
8/27/2009
4:00:57 AM
Ultra Rare 4.3%