The "Target" Code
From the main menu enter Square, Circle, Square, Down, Down, Circle, Up. This will unlock "The Barge" Arena Level and the Stan Lee interview #1.
Unlock Secret Bonus Level: Hell
At the main menu, press Right, Right, Square, Circle, Left, Up, Down
Infinite Cosmic Power
At the main menu press Up, Square, Square,
Square, Left, Right and Circle, you should hear
a sound confirming the correct code entry.
All F4 Sercets Found
Highlight bonus and then put in Right, Left, Up, Up, R1, R1, L1, Down.