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Sony PSP - Spiderman 3 cheats

Unlock Symbiote Spider-Man's story mode:
Finish the game as Spider-Man.

Unlock Arena mode:
Finish the game once. You can access to the Arena mode option in the Extras menu. 

Unlock black Spider-Man suit:
Collect all 50 Black Spider Tokens. Now you can wear any time.

Unlock New Goblin as a playable character in collector's edition: 
Beat New Goblin in his first battle to unlock him.