Quick tip for anyone trying to keep their bimbo level low: Get the Iron Armor. You can do it pretty easily if you solve the puzzle in the cluttered room and the one past the path it unlocks, and it completely trivializes the Ice Guardian. (It's not enough to get past the others by itself, though, and you stop being able to use it after you get to Bimbo Level 2. "By itself" apparently being a key word.)