Trendsetter
Place a sticker or a decoration on another player's sackperson
1/1/2009
12:59:46 PM
Rare 37.6%
Specter Officer
Reach max level with one class in the Cooperative campaign.
12/13/2008
3:48:04 PM
Ultra Rare 2.3%
Team Player
Complete 5 missions with a full party of 8 in the Cooperative campaign.
11/23/2008
11:44:10 AM
Rare 10.9%
Primarch Hunter
Kill 200 Elite Chimera in the Cooperative campaign.
11/22/2008
12:22:03 PM
Very Rare 6.2%
Specter Initiate
Complete 20 missions in the Cooperative campaign.
11/21/2008
4:24:35 PM
Very Rare 8.1%