Make a shield that actually looks like Captain America's. Give it maximum stopping power. ???? Hail Hydra!
It actually wouldn't be that hard depending on how you did it. If you just had a counter so after you press a button 3 times the monster is allowed to it could work.
That's only the condition that would allow the mob to have learned a behavior. A simple counter. But how do you actually implement that behavior? It isn't just "let the mob push the button", it's a lot more complicated than that. You have to make the mob then target the object, make them use the object, and make them do so in a way that does not seem immediately stupid (like going and pushing a button just because they saw the player do it, for no reason other than they say the player do it).
They'd have a reason for pressing/using the object, like to retrieve food or hunt the player. Or maybe some would just be curious and be a "I PRESSED BUTTON" animal.
