Black Ops 2.
I started out with some 'team death match', but then I went over to 'free for all' for a long time and kicked much ass with shotgun, rifle, knife and grenades.
Oh that final kill when someone was sprinting up behind with his knife out, at the last second I turned around and blasted his face off with the shotgun. Brute force = 1, Stealth = 0.