Specter Officer
Reach max level with one class in the Cooperative campaign.
1/8/2009
5:02:36 PM
Ultra Rare 2.3%
Pincushion
Get 50 kills with the Hedgehog in the single player Campaign.
12/26/2008
3:33:49 PM
Very Rare 8.5%
Tour of Duty
Complete one mission on each region in the Cooperative campaign.
12/26/2008
3:49:26 AM
Very Rare 7.4%
Primarch Hunter
Kill 200 Elite Chimera in the Cooperative campaign.
12/26/2008
1:29:09 AM
Very Rare 6.2%