Power Blade 2

Sound test:
Hold Left + A + B on the controller two, then press Start button on the controller one at the title screen.

Level 6 battle:
Enter the following password:

[Green bottle object] [Curvy "V"] [Hamburger object] [Star]
["L" on circle] [Curvy "V"] [The letter "S"] [Two curvy "V"s]
[Green bottle object] [Hamburger object] [Two curvy "V"s] ["L" on circle]

Final level:
Enter the following password:

[Energy Power-up]] [Single Boomberang] [Hamburger] [Star]
[Life Stock] [Single Boomberang] [Star] [Double Boomberang]
[Energy Power-up] [Hamburger] [Double Boomerang] [Life Stock]