I have another question, regarding level 6. I've found the compass, map, heart piece, and superbomb shop in there. I made it to the Gleeok Boss, but died (because I was too lazy to go to the potion shop and upgrade to a red one..ugh).
So I've covered the whole dungeon, but I haven't found a special item, other than the super bomb shop (I bought 2). Did I miss something?