While exploring the dungeon hold A, hold Up, press B once, release Up, hold Right, press B once, release Right, hold Left, press B once, release Left, hold Down, press B once, release Down, hold Select, and finally press Start, then release all buttons. The message "DUNGEON LEVEL 1" will appear. Change it from 1 to 16 and press Start to jump directly to the selected dungeon level.
