So my Mr. Iron just started doing negative damage. I have beefed him up considerably and I have no idea how many items i have used on him. I am playing 500 waves on hard. Here are some images.
http://imgur.com/gE3R1zK.jpg
http://imgur.com/ZxfVaXM.jpg
http://i.imgur.com/G4iZ62P.jpg
http://imgur.com/smhqxkP.jpg
http://imgur.com/ncbyr5J.jpg
http://imgur.com/szkX72X.jpg
I ended up losing because it might have actually given them health?
