I already got the lens by getting the key in the room where you need the lens to see the spikes on the floor. I just went straight across the spikes and using potions to fill up my life so I wouldn't die before getting the key. Now I am so stuck in this dungeon. I've been in I think every room I can access w/o the lantern or any keys. Outside of the dungeon I see the skull head on the ground that you need the lantern to burn, but other than that, I've looked EVERYWHERE for keys, bombable or walkthru walls, and I just can't seem to go any further. I'm stuck