Killing Spree - Kill 5 Helghast in 15 seconds
Kill 5 Helghast in 15 seconds whilst on foot and maintaining at least 85% health
3/4/2009
11:43:04 PM
Rare 39.3%
Sharpshooter
Get 30 headshots while scoped in with the Fareye or Marksman in the single player Campaign.
1/19/2009
7:07:38 AM
Rare 31.1%
Specter Officer
Reach max level with one class in the Cooperative campaign.
1/11/2009
3:09:34 PM
Ultra Rare 2.3%
Tour of Duty
Complete one mission on each region in the Cooperative campaign.
1/1/2009
10:30:32 AM
Very Rare 7.4%
Specter Initiate
Complete 20 missions in the Cooperative campaign.
12/30/2008
8:40:39 PM
Very Rare 8.1%
The Bigger They Are
Defeat the Leviathan in the single player Campaign.
12/30/2008
7:52:15 PM
Rare 39.8%
Team Player
Complete 5 missions with a full party of 8 in the Cooperative campaign.
12/27/2008
1:48:26 PM
Rare 10.9%
Point Man
Earn 1 million XP from ranked games in online Competitive mode.
12/13/2008
9:33:46 PM
Ultra Rare 2.1%
Specter Recon
Collect 50 pieces of gray tech in the Cooperative campaign.
11/29/2008
7:43:04 PM
Rare 15.6%
Talk To The Hand
Use the Auger force barrier to stop 150 incoming enemy shots in the single player Campaign.
11/27/2008
7:02:36 PM
Rare 38.5%
