Monster World mode:
Successfully complete the game in story mode.
Monster Grave mode:
Successfully complete the game in Monster World mode.
Violence Rock mode:
Successfully complete the game in Monster Grave mode (all monsters).
Ultraman Returns mode:
Successfully complete the game in in Violence Rock mode with the top score.
Survival Mode:
Successfully complete the game in Ultraman Returns mode.
First Monster Set:
Successfully complete the game in story mode.
Second Monster Set:
Successfully complete the game in story mode twice.
Third Monster Set:
Successfully complete the game in Ultraman Returns mode.
Alternate ending sequence:
Defeat Z-Ton with physical attacks, without using the Spacium Ray
Unlock More Characters:
Play survival mode using the two enemy characters in the upper right
character selection menu to unlock hidden fighters (such as Ultraman Noah). Play
the character in the bottom of the middle row (the scorpion like monster) to
unlock the third Nexus.
Play Deumantis
You may normally play as the third Deumantis after you are defeated. Clear
the game once and you'll get the option to choose between the two characters
