Quadruple Threat
Complete at least one challenge for every instrument at Gold level or better
1/27/2011
10:39:57 PM
Ultra Rare 2.7%
Grenade Hangman
Kill 10 enemies with grenades by aiming while hanging from a ledge
1/23/2011
2:34:59 PM
Very Rare 5.2%
Run-and-Gunner
Kill 20 enemies by shooting from the hip (without aiming with the L1 button)
1/22/2011
7:46:04 PM
Rare 22.5%
