Beat it only with maxed dual Teagles, never any other weapon. Though I did upgrade all the equipment & specials. But I just held down left click... never took damage other than BB guns *sigh.
@ericbloedow That's because it requires, you know, strategy to beat them. It's not going to always be faceroll easy. Those require either Wizards Bane or Magekiller. Encouraging you to join brawls that give the tokens. Or joining a clan for Wizards Bane. The zone after that drops magekiller tokens.