Evil Genius 2: World Domination

This can be done quickly by luring Symmetry repeatedly and having Emma waiting outside the door to your Vault. Symmetry and her team seem to always don disguises while grabbing gold (at least I've never seen them not), so once they get through the door, it should count as Emma removing 5 disguises each time. Just make sure none of your Henchmen are close by so they don't get credit for the removed disguise instead.