Can Opener - Destroy a Helghast APC
Destroy any Helghast APC during battle
1/3/2012
9:45:54 PM
Rare 29.5%
Elementalslayer - Kill the ArcTrooper within 1 minute 30 seconds
Kill the Tharsis Refinery ArcTrooper in under 1 minute 30 seconds
12/29/2011
9:14:56 PM
Rare 28.2%
Fragmartyr - Kill 2 Helghast whilst taking your own life
Kill 2 Helghast at once and take your own life using a single frag grenade
12/21/2011
10:22:45 PM
Very Rare 5.4%
Melonpopper - 15 headshots using the sniper rifle
Get 15 headshots using the VC32 Sniper Rifle
12/21/2011
9:35:35 PM
Rare 11.8%
Blade Runner - 75 kills with the knife
Kill 75 Helghast using the knife
12/21/2011
8:36:34 PM
Ultra Rare 4.3%
Supreme Challenger
Complete 500 total challenges between all categories.
12/18/2011
12:23:31 AM
Ultra Rare 2.9%
Mission... accomplished?
Finish the Campaign on any difficulty (all Intervals complete)
12/17/2011
10:26:02 PM
Rare 27.4%
State-of-the-Art. Bang, Bang!
Kill 10 enemies in a row with Sniper Rifle headshots
12/17/2011
9:52:07 PM
Ultra Rare 2.5%
A Precursor
In the Poker Room of Prison, kill all 3 enemies with headshots before slo-mo ends
12/17/2011
7:59:56 PM
Very Rare 9.2%
That's a lot of Zeros
Attain a total of 250,000 points through challenges.
12/13/2011
12:15:15 PM
Rare 31.6%