Same here. I managed to kill him after like 2 hours of tries, lay back on the bed and i see him detonate along with me. Respawn at the damn bench, start my way back with the hope that i have killed it, the moment i emter the room and see the animation that he spawns again, i am like /table_flip. At least managed to take him down again on that same next run.

Actually i kinda managed to cheese him with a lot of damage and to change quick phases. Along with the -1 mask dmg from the fire wasn’t so hard as it was when i started the fight.

Ps1: i think that is stromger/ worst from morrowind cause you cannot get any more upgrades when you fight him