Can you cut off their arm and they just shrug, laugh, and put it back on and keep going? If you shoot them with a gun does it just go straight through them and they laugh? Pretty sure they don't need to eat either. Can they move around if they only have skeleton left? Since they were raised by necromancy shouldn't that be how they work? It seems like in game they are portrayed a lot weaker and are just humans with a second wind and no emotion. I think stressing their nigh invincibility should be a focus.