Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.

Kill 2 enemies with a single bullet in Single Player or Special Ops.

Help train the local militia.

Score over 5000 points in a singleplayer game

Score over 1500 points in a singleplayer game

Finish the game in Normal Mode

Defeat 50 enemies with the 92FS - 9mm

Defeat 70 enemies with the M4

Defeat 20 enemies with a single punch, after softening them up with gunfire

Defeat 20 enemies with headshots

Defeat 30 enemies with Mk-NDI grenades

Defeat 20 enemies by shooting from the hip (without aiming with L1)