That wizard boss puts you in some impossible situations. I am ADDICTED to this game! If there was an android port my life would be better for it.
Clearing rooms : Nukes, 4x Barrel, 2x+ Trigger, Reverse Stock, Inflatable Grip, 30RND Drum.
Boss : Bouncies, Reverse Stock, Bird Barrel, Drunken Mag, 2x+ Trigger, Choice of grip.