Originally Posted by BozZ2k8
no only the "kill slow time" mutator. just do it quickly and ull get achievement^^!
I did that one. I did all of them, but that's the only one I did in instant action. I didn't get the achievement though.
Assassin's Creed, Assassin's Creed II, Bioshock 2, Call of Duty 4, Gears of War (1250), Halo 3, Modern Warfare 2, Rainbow Six Vegas 2, Uno (200)
Gears of War 2 (1525)