could you perhaps share a screenshot of the map progression and room youre speaking of? if im thinking of the room in question, youre referring to the 6 or so wizzrobes that seem like there would be no way of avoiding in the single tile wide corridor. you can make it through there with well timed damage boosts to avoid getting teleported back to the start. at least thats what I did. funnily enough, I finished the dungeon without even fully exploring it, as the boss key was on that route.
Yes thats the room im talking about! Ive been trying to damage boost with no success. Ill keep trying