The Bull
You defeated Lawrence Barrett, elite member of a secret mercenary hit squad.
3/1/2012
1:16:29 PM
Rare 42.3%
Ghost
You made it through an entire hostile area without so much as a squeak.
2/26/2012
9:14:07 PM
Rare 47.2%
First Takedown
Perform your first Takedown. Civilians don't count, so be nice.
2/26/2012
9:11:25 PM
Common 78.3%
Diamond in the Rough
Rescue the Russian President. Complete "Down the Rabbit Hole" on any difficulty.
2/22/2012
4:26:46 PM
Rare 31.7%
Bad First Date
Find the girl. Complete "Scorched Earth" on any difficulty.
2/22/2012
4:03:42 PM
Rare 32.3%
Run-and-Gunner
Defeat 20 enemies by shooting from the hip (without aiming with L1/R1)
2/18/2012
7:26:47 PM
Rare 19.2%
Frozen in Time
Kill 50 Necromorphs while they are in Stasis (single player only)
2/18/2012
12:07:21 PM
Rare 28.0%