Unlock General Corrosive in Multi-Player Mode
Complete the game with all secret and speed chips to unlock General Corrosive as a playable character in multi-player mode.

Unlock Original Concept FMV
Complete campaign mode to unlock the Original Concept FMV sequence.

Multi-Player Invincibility
In any multi-player level, press Start. You can be shot at, but receive no damage. You cannot move, but it is better than dying.

Go to: Metal Arms: A Glitch in the System Info Page | nGaming Home Page.