Quote from stickmanme1kk,you'll probably hate me for this but here goes.
how about little tiny reactions like flinching or starting to duck just before he gets whacked over the head with a weight. just small things, purely for show.
Quote from KagedanjiNew mode!
Yojimbo Mode (Yojimbo is Japanese for "bodyguard"):
Your victim says he'll pay you $50, sweet. But you have to protect him this time if you want the dough. Make contraptions to block random incoming missiles, rushing infantry, motorcycles, even angry samurai with those long wood choppin swords.
Ending: The ragdoll says he won't pay you, then you hear a Mortal Kombat sound FX...FINISH HIM! And you do so for extra points.