Crazy combo build of both hammer permastun (with 6 stamina potions!) and invulnerability build, AND manathirst healing.
60+ stacks of poison? No problem, I'll FACETANK it!
Honestly another funny build. I had 8 piggy banks right before this final battle, so I bought half the items at full cost from shop.
(Also, for some reason the game doesn't let me continue past 14 battles, I already am on version 0.3.5, and uninstalled and reinstalled. Not sure why it's not updating or whatever).