Cheat mode:
Hold L + R + Select + Start on controller two and press Start on controller one at the title screen. A cheat menu with series, mission, invincibility, song, sound effects and sound group options will appear.
System Password
Border Zone XGBBKGXMZW
Midgard DBBZHHBBZ2
Jotunheim XGZZKBV3BX
Bifrost 5B3CKGWVW2
Valgard 3G3HHBFV8B
Vigrid 3VVWHBFMRG