To return the dammage to the legs or hands, use:
?(legsHit _unit > 0):hint "Legs are hit!";
?(handsHit _unit == 0):hint "Hands are fine.";
I tested and it works great! Hope this helps!
-Ganst949
Great addon! I do however have problems with hand placed mutants on this map as they won't chase you. They simply stand still with the occasional walking animation while still in place.