Unfortunately seems immune to poison and toxic. Also wasn't able to bleed him, but that may be Priscilla's dagger having low buildup + him shield hugging. I can also confirm that you're free to kill Petrus from the moment you get Replenishment from Reah. She makes no mention of Petrus' death and is still selling miracles after beating half a dozen bosses.

fatass

I KILL

Petrus of Thorolund? More like Petrus the rotund

"What did i do wrong?"
Everything except catching my great club +15 two handed R2 buffed by great magic weapon and power within with your whole body, impressive!

Reah & companions showed up just by beating Capra demon.

wholesome chungus

"Feel the wraaath of the gods" - uses force.

I love how the chests you find past him in the elevator area were his secret stash. The cracked red orbs should be a red-flag he was plotting something awful.

Enquanto eu estava conversando com ele e ele falando sobre a missão de ir nas catacumbas com os amigos dele, acabei batendo nele sem querer e ele e os amigos dele, assim como a rhea, ficaram hostis comigo e mesmo descansando na fogueira, ele ainda me persegue, será que a missão trava ou ela continua assim msm??? Um abraço.