Dungeon Explorer Cheats
For the really cheap player, enter the password "DEBDE DEBDA" then hold RUN and press Button I.
You'll get a password error message. Now press Button II and select a character or enter a password.
To your delight, you'll find that your character has a massive number of Hit Points, can walk through walls, and has inexhaustible Magic. Better yet, you can use the bushes in front of the castle to warp to the game's bosses and other key locations.
For smart weapons, enter the password "HOMIN GAAAA".
To play as the Princess, simply enter one of these passwords: "JBBNJ HDCOG" or "JOINJ HFOHK".
If you prefer names to mere titles, enter the password "CHECK NAMEA".
To play as the elusive Hermit, enter the password "IMGAJ MDPAI" or enter the building east of the castle that "No one is Home" in while using the Bard with at least 100 Hit Points.