Metal Arms: Glitch in the System Playstation 2 Cheats

Unlock Concept Movie:
Beat story mode to unlock this feature.

Unlock General Corrosive for Multiplayer:
To unlock General Corrosive for multiplayer, collect all of the speed chips in the game.

Fighting the Zombiebot King:
In order to beat the Zombiebot King just wear him down using rockets until he pauses (doesn't move). Toss a grenade (coring charge) into its mouth. On Normal, it takes five grenades to kill him and after the 3rd and 4th grenades there are regular zombiebots that swarm the arena.