Hard Finish
Finish story mode on Hard, without changing the difficulty setting.
6/21/2011
4:42:30 PM
Very Rare 6.6%
Road Kill
Take down 25 enemies while riding on the roof of a moving vehicle.
6/17/2011
1:23:17 AM
Rare 40.2%
Oh, You've Done This Before
Take down 50 enemies by sticking them with a grenade.
6/13/2011
10:15:12 PM
Rare 14.3%
