Pa - Kua-Chang and Tai chi, using your enemes force, weight, and velocity against them, and can be used for total over kill, as it is an internal martial art and is based on yin and yang, and the circle, not linear. My step dad does it, and his sifu said he had enough power in his hands to blow a man's heart through their spine. That was 10 years ago! :P
Also, hand grenade