Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
8/5/2011
3:09:32 AM
Rare 31.6%
Team Building
Complete all test chambers in the Team Building co-op course
7/15/2011
4:02:00 AM
Rare 46.8%
Tactician
Hit 20 different targets with multiple biotic powers to combine the effects
7/12/2011
1:28:10 AM
Very Rare 8.7%
Revenge!
Gain the loyalty of the mercenary ("Cerberus Pack" downloadable content)
7/9/2011
6:14:50 PM
Rare 30.5%
The Ultimate Sacrifice
Complete the Arrival DLC ("Arrival" downloadable content)
7/9/2011
4:52:12 PM
Rare 10.3%
Last Stand
Survive all five waves in the battle for Object Rho ("Arrival" downloadable content)
7/9/2011
3:38:34 PM
Very Rare 5.1%
Covert Action
Rescue Dr. Amanda Kenson without attracting hostile attention ("Arrival" downloadable content)
7/2/2011
7:02:42 PM
Ultra Rare 4.9%
