I feel you bro. Just beat the blue smelter demon today. Almost destroyed my entire room trying. I think I can survive this dogshit runback with my eyes closed now.
well, I know exactly how do you feel. my build was magic( sorcery ). I had half of you HP and after go through all that I saw the boss and arena. after 100 trys, decided to skip it :D. Impossible with magic build.