Yeah, this has always been the hardest encounter in the dungeon. Those four thralls do a crap ton of damage and to have all four of them on you while fighting the boss at the same time is really difficult. Now with that damage applied to the boss he goes down almost instantly.

The encounter is actually kind of annoying because they all respawn and if you’re trying to smelt some obsidian they will respawn several times before you’re finished. It makes it so that using the forge to get obsidian isn’t worth it. It’s far better to scrap obsidian weapons than to use the forge to obtain obsidian bars.