Get Progressive Scan Mode
If you have a progressive screen TV go to codes and enter RIGHT, UP, RIGHT, RIGHT, UP, RIGHT, RIGHT, RIGHT, UP, RIGHT.
WARNING: If the screen turns blue you do not have a progressive scan TV and you will HAVE TO REBOOT THE PS2 to get it back to normal.
All levels
Go to the codes screen in the options menu and press Down, Left, Left, Down, Left, Down, Right, Down, Left, Down.
More Special Features
Go to the codes screen in the options menu and press Left, Down, Up, Left, Right, Up, Down, Left, Right, Down.
More Items
Go to the codes screen in the options menu and press Right(5x), Left (3x), Up, Up.
Get Difficult Mode
Go to the codes screen in the options menu and press Down, Up(8x), Down.
Get Normal Mode
Go to the codes screen in the options menu and press Up, Down, Up, Down, Up, Down, Up, Down, Up, Down.
Get Easy Mode
Go to the codes screen in the options menu and press Up, Down(8x), Up.
Get Old Soul Super Weapons
Go to the codes screen in the options menu and press Right, Up, Down, Down, Up, Right, Right, Up, Down, Down.