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

Note: The player name ASSASSIN must be used in conjunction with these passwords.