This SOB follows your cursor so you aim and shoot with it. Aim than click the left mouse button to unload some led. Note unlimited ammo. You can shoot everyone you don't like. You have to shoot the baddies but if there an innocent person you wanna shot. Be my guest. Your press the Space bar to hide behind the wall and not get hit by the baddies. Downside you can't shoot the baddies yourself. You press space again to come out form a wall so you can shoot the baddies, downside you can get hit by the baddies.