Clear all levels on Wimp difficulty or higher.

Complete the game on Trooper difficulty or higher.

Complete the game on Brutal difficulty.

Beat the game on Wimp difficulty or higher without continuing or using cheats.

Beat the game on Trooper difficulty or higher without continuing or using cheat

Beat the game on Brutal difficulty without continuing or using cheats.

Clear all levels on Venus.

Clear all levels on Mercury.

Clear all levels on Pluto.

Clear all levels on Nero.

Complete the game without dying or using any cheats.

Reach the secret level without cheat.

Obtain the Flamethrower as Steiner.

Obtain the Fireball as Steiner.

Obtain the Rocket Launcher as Hunter.

Obtain the Homing Missiles as Hunter.

Clear all stages without collecting any other weapon on any difficulty.

Clear all stages without collecting any other weapon on Brutal difficulty.

Accumulate 5 lives on Trooper difficulty or higher.

Accumulate 300 or more bullets.

Accumulate 500 or more bullets.

Accumulate a total mission score of 150,000.

Accumulate a total mission score of 500,000.

Accumulate a total mission score of 800,000.

Clear the first level solo without getting hit or losing any lives.

Defeat Demnogonis solo without taking damage on Trooper or higher.

Defeat Demnogonis solo without losing a life on Trooper or higher.

Defeat Semai solo without taking damage on Trooper or higher.

Defeat Semai solo without losing a life on Trooper or higher.

Defeat Razide solo without taking damage on Trooper or higher.

Defeat Razide solo without losing a life on Trooper or higher.

Defeat Algeroth solo without taking damage on Trooper or higher.

Defeat Algeroth solo without losing a life on Trooper or higher.

Complete the game in under 30 minutes without cheats.

See the Solar System.