I did it! Thanks to a very heavily used Agnostic's Collar and four Schadenfreude Potions.
Preps were Translocation Seal, Dragon Shield, +gold, Scout Player, health->attack, 2 extra potion shops, +10% badge, and Scaden/Reflex/Whupaz for potions.
Worshipped Binlor for Stone Fist, then converted to Taurog for +15% physical resist, then converted to TT for two levels of Tikki's Edge, Dodge, and two Reflex/Quicksilver Potions. Then in the arena, I used the Agnostic's Collar to convert to GG, take Humilty then Enlightenment, then Mystera to get my MP up to 18, then JJ for Petition and Health Boost.
Killed Bleaty thanks to my 65% resists and a Reflex potion, followed by a Deathgaze. Killed Tomothy by Fireballing him down through the use of Schadenfreude Potions. I beat everyone else through a combination of regen fighting, using potions, and taking a 75% last chance from JJ. I had enough resources left to take off another 20 or so levels of Death Protection after I killed the boss (Death Gaze + Knockback >> Death Protection).
Based on this run, I will say, with a significant amount of confidence, that the bonus potion shop prep is AMAZING. And Agnostic's Collar is still absurdly good, but everyone already knew that