Except that's not always the case, is it? Sometimes there's a particular mob that seems to declare a grudge match against you. It's the mob that kills you more often than not, the mob that has a really nasty trick or two up its sleeve, the mob that's stalking you with diligence that's not usually seen outside of a restraining order. What one mob has you seeing red every time it appears? What mob do you attack with a vengeance no matter what, even if you out-level it by the score? What mobs have grated so much that you've declared a crusade against their kind? Grudge match: GO!