Run-and-Gunner
Kill 20 enemies by shooting from the hip (without aiming with the L1 button)
9/7/2009
6:06:29 AM
Rare 22.5%
Steel Fist
Kill five enemies with a single punch, after softening them up with gunfire
9/5/2009
1:25:14 PM
Very Rare 9.4%
Invisible Predator
Complete one predator challenge by using only Silent Takedowns
8/30/2009
6:23:07 AM
Ultra Rare 4.0%