Set the control type to 'Keyboard' in Control Options and enter the following codes at the Pause menu. The U.S. Version of the game you must have the v1.1 patch installed for these codes to work.

Unlock ALL Bonus Material:
Down, Telekinesis, Up, Left, Right, Right, Lift Attack, Down, Right, Right.

Unlock 'Wireframe' Mode:
Autoface, Down, Autoface, Up, Feed, Autoface, Down, Lift Attack.

Unlock Invincibility:
Up, Down, Right, Down, Feed, TK Aim, Down, Lift Attack, Autoface.

Unlock Infinite Reaver Gauge:
Down, Down, Up, Left, Feed, TK Aim, Down, Lift Attack, Telekinesis.

Replaces Kain's Soul Reaver with Penny Arcade's Famous Cardboard Tube:
Up, Down, Left, Right, TK Aim, Lift Attack, Down, Telekinesis.

ALL Special Attacks Become Immediately Usable:
Right, Down, Up, Down, Down, Feed, Lift Attack, Telekinesis, Down.

Unlock Willow's 'Vehiculum Furtus Maximo' Kain/Toon Raziel:
Up, Down, Up, Down, Feed, TK Aim, Down, Telekinesis, Lift Attack.

Raises both the Health Gauge and TK Meter to Full Capacity:
Left, Left, Up, Up, Autoface, TK Aim, Telekinesis, Down, Lift Attack.

Replenishes Health Gauge, TK Meter and Reaver Gauge:
Left, Right, Left, Right, Feed, Autoface, Telekinesis, Lift Attack, Down.

Disables Textures:
Autoface, Down, TK Aim, Right, TK Aim, Up, Lift Attack, Autoface, Down.


Unlock the entire Dark Chronicle:
At the 'Title' screen enter Feed, Down, TK Aim, Autoface, Right, TK Aim, Lift Attack, Down, Autoface