Heh, so Priest Gold is hilariously broken. Standard maze level with guaranteed Pactmaker next to spawn and you start with the Stone Sigil.
I run it the first time, halfling priest as usual, and come up against these guys. 3 of them.
So I think "Hmm, how to beat these guys". If you find ENDISWAL and take Warrior Pact from pactmaker, with 65% resist you need ~157 to tank them. Doable, considering you are getting 11 hp per level with boosters and priest. So I try it and I get to 153 health and run out of dark tiles to charge ENDISWAL with.
Then I go "Hey, dwarf would work well" so I try a dwarf run. I'm at level 5 when I find CYDSTEPP and go "oh. that's easier".
Then I win.
I imagine CYDSTEPP will be disabled for that level in the next patch so get your wins now