Spider-Man: Friend or Foe Cheats for PSP
Hold L and R at the stage completed screen and then press Circle, Down, X, Right, Square, Up, Triangle, Left to unlock Harry Osborn the son of the original Green Goblin in the new Goblin costume.
These are unlocked by playing a game in 'Memorable Battle' mode.
Unlock Hero Concept:
Save the game when the game has successfully been completed and then continue on the cleared 'Save' file and finish Tokyo area 1.
Unlock Carnage as a Playabe Character:
To unlock this Spider-Man villain you must play through Co-Op mode and he will become unlocked.
After you complete ANY mission at the place where you are graded DONT click x and continue instead press Left, Down, Right(2), Down, Left to unlock New Goblin in the web shop!
First save the file the you want onto your pc
Next go into the compressed file and right click on the file inside
once you have right clicked press copy and then pug up your psp to ur computer using a usb cord
click open folder to view files and click on psp and then click on save data or whatever once in there right click again and press paste.
now just unplug everything and play your game
you should see a new save file....it will have everything the description had on gamefaqs
email me your results and if you are satisfied