The Bull
You defeated Lawrence Barrett, elite member of a secret mercenary hit squad.
9/26/2011
3:09:53 PM
Rare 42.3%
Ghost
You made it through an entire hostile area without so much as a squeak.
9/25/2011
1:47:53 PM
Rare 47.2%
Laser Burn
Successfully complete a Hardware Crack in any single player mode.
1/23/2011
8:53:11 PM
Common 80.7%
Stormed the Core!
Successfully complete a System Override hack in any single player mode.
1/23/2011
8:16:25 PM
Common 83.4%
Trace Element
Successfully complete a Trace Route hack in any single player mode.
1/23/2011
8:04:59 PM
Common 88.1%
