Call of Duty 2

Select mission:
At the mission selection screen, hold LB + RB and quickly press:
Left(2), Right(2), Y(2).

Kill requirements:
Head shots are instant kills.
Body shots require two or more shots for a kill.

Recommended weapons:
When you find a Kak 98, pick it up. It is one of the most powerful
guns in the game. There is a scoped-Kak 98 in the last level (Dragon's Teeth)
in the second bunker in the building.

 