It's not actually that hard. Had to scum a bit, but everything lined up on my 4th attempt. Only one dodge (quicksilver) during the boss fight. Desecrated Dracul to reduce myself to 1 HP so I could use CYDSTEPP mid-fight, had Namtar's Ward, bought the badge of courage, and I might
have been able to scrounge up enough piety for unstoppable fury from Taurog, but it never came to that.