Godzilla: Save the Earth

Run when he digs, or you will be thrown. Watch out for his long range attack, it is powerful. Also watch out for his attack that stuns you. Try to stay away from him, and when he is done attacking or dazed by digging, try to execute a powerful attack.

Orga will attack you while your on the ground, can throw you, and is extremely tough. Try to keep out of striking range of Orga. Also try not to be shoved on the ground or he will belly pound you. Use strong physical attacks to defeat him.

Use strong physical attacks and strong long range attacks; or use Orga or Destroyah.

When in the Mothra larval stage, fight your opponent as long as you can. When you are just barely out of health, transform into the butterfly stage. You will have full health and have another chance to defeat your opponent without starting over.

Beat the game on the hard difficulty setting.

Sucessfully beat the game two times with Megalon and Godzilla [2000 or 90s] to unlock Space Godzilla, King Gidorah and Jet Jaguar.

When playing as Jet- Jaguar and you are having a hard time fighting your opponent, make yourself small. By doing this, you will be invulnerable to laser attacks, be able to run extremely fast, and your attacks are faster than any other monster.

Outrage: Press L1 + Circle + Left + Square.

Ultra Flying Kick: Press L1 + Square, then at the correct moment quickly press Up + Square.

Energy Drain of Doom: Press L1 + Circle or Square, then quickly press Circle(2).