Pause the game and enter the following cheats to activate them:
All bonuses: BLACK, DOWN, WHITE, R, LEFT, WHITE, R, LEFT, WHITE, R, LEFT, WHITE, DOWN, L, Y.
All Dark Chronicles: R, DOWN, BLACK, L, RIGHT, BLACK, Y, DOWN, L.
All power-ups: LEFT, LEFT, UP, UP, L, BLACK, B, DOWN, Y.
All Slams: RIGHT, DOWN, UP, DOWN, DOWN, R, Y, B, DOWN.
Cartoon mode: UP, DOWN, UP, DOWN, R, BLACK, DOWN, B, Y.
Infinite reaver charge: DOWN, DOWN, UP, LEFT, R, BLACK, DOWN, Y, B.
Invincibility: UP, DOWN, RIGHT, DOWN, R, BLACK, DOWN, Y, L.
Refill health: LEFT, RIGHT, LEFT, RIGHT, R, L, B, Y, DOWN.
Tube Reaver: UP, DOWN, LEFT, RIGHT, BLACK, WHITE, Y, DOWN, B.
Turn off textures: L, DOWN, BLACK, RIGHT, BLACK, UP, Y, L, DOWN.
Wireframe mode: L, DOWN, L, UP, R, WHITE, L, DOWN, Y.
Unlock Bonus Material:
When you beat the game, you unlock everything in the Bonus Material section, as well as all the story cutscenes in the Dark Chronicle. The Bonus Material section comprises a variety of extras, such as voice-over sessions, 3D renders, sketches of enemies, and more. The Dark Chronicle is a complete collection of all of the game's cutscenes, viewable in the order they appeared, giving gamers the story in full without the action.