Magic Sword Cheats

Level Select, Bonus Health
Highlight exit in the options screen and hold L + R + Start
on Controller Two, then press Start
on Controller One.

Secret Warp
There is a magic door on the 34th floor that warps you directly to Hydra. To locate this elusive door, vaporize the two blocks and pay close attention to the pillars. Hit the fourth pair of pillars on the left to activate the switch that makes the door appear.