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Playstation 2 - Robot Wars cheats

Unlock all robots, arenas, trophies, and unlimited credits:
Enter "JPEARCE" as a player name

Switch robots
Go to the main menu, choose "War Zone" after select any robot. 
After beating a match, the game will show your next opponent. 
Push Select + A to play as your opponent against the robot that 
you last beated.

Unlock Behemoth as playable character:
Win 1st place in the Russian Rampage

Unlock Chaos 2 as playable character:
Win 1st place in the Robot Wars World Championship Tournament

Unlock Firestorm as playable character:
Win 1st place in The Hamburg Heavyweight

Unlock Hypnodisc as playable character:
Win 1st place in the Flip Frenzy Tournament

Unlock Mortis as playable character (buy for 40000 credits):
Win 1st place in the Liberty Lightweight Cup in the North America Arena

Unlock Razor as playable character:
Win 1st place in the Nerves Of Steel

Unlock Thor as playable character:
Win 1st place in the Robot Wars Championship