I really think weapons need to do realistic damage in this game. To a human sized creature all ammuniton should cause considerable damage. Smaller calibre weapons should cause them to recoil back and sniper rifle should kill instantly if it hits the torso or head. If limbs are hit then the limb in incapacitated. Larger creatures should be able to take more. I don't like the unrealism of shooting one humanoid enemy with half a magazine of ammunition. CoD is even excessively unreal. Rounds should have damage like in Operation Flashpoint. That would encourage players to keep their heads down and think about what tactics to use.