Ultraman

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.