At the main Disc One Fear Effect Menu, press LEFT, RIGHT, UP, DOWN, DOWN, CIRCLE. Now when you go to the Options Menu, there will be an Art Gallery feature in the Extras folder.

On Disc Two, the button presses are: UP, UP, R1, R1, R1.

On Disc Three, the button presses are: L1, R2, L1, R2, L1, SQUARE.

On Disc Four, the button presses are: CIRCLE, CIRCLE, SQUARE, L2, SQUARE

Once you've conquered the game, you'll have an opportunity to go back through and use some fun cheats. Start a new game. When you take control of Hana, walk down until you see a console. Sidle up to it and press TRIANGLE. This will allow you to enter the following codes:

Big Head Mode: 10397
Every Weapon: 11692
Infinite Ammo: 61166