Hard Finish
Finish story mode on Hard, without changing the difficulty setting.
7/7/2011
6:05:56 PM
Very Rare 6.6%
Road Kill
Take down 25 enemies while riding on the roof of a moving vehicle.
7/1/2011
9:58:33 PM
Rare 40.2%
Oh, You've Done This Before
Take down 50 enemies by sticking them with a grenade.
6/26/2011
7:14:16 PM
Rare 14.3%
