Try every one of 16 possible shot types

Destroy 100 enemies with plasma

Destroy 100 enemies with electromagnetic pulse

Destroy 100 enemies with liquid nitrogen

Destroy 100 enemies with laser

Destroy an enemy at the last moment

Shoot at maximum power 100 times

Destroy 10 reptiloids

Destroy 10 insectoids

Destroy 10 robots

Destroy 10 siliconpazorps

Complete the game