Lucifer's Accountant
Beat any song with a final score which is evenly divisible by 6 (Quickplay+)
11/19/2010
8:36:23 AM
Common 62.7%
Anthemic Archivist
Expand your song library to at least 115 songs of any type. Be creative!
10/10/2010
1:34:24 AM
Rare 17.2%
Unnecessary Roughness
Use a riot shield to beat down an enemy in Single Player or Special Ops.
12/15/2009
8:32:14 AM
Rare 34.5%
The Harder They Fall
Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.
12/15/2009
7:27:26 AM
Rare 30.0%
