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Unclockable: Telephone
While playing, pause and input RIGHT, LEFT, RIGHT, LEFT, DOWN, DOWN, UP, UP, Y, X, Y, Y, X, X.

Sound Credits[Easter Egg]
This will occur during your second Dark Prince transformation in the large courtyard right before the first chariot sequence. In the corner of the courtyard, there will be a hole in the ceiling that respawns enemies until you leave the area. Near that is a panel you must stab and hang from to open the exit. Climb the closest pole to the hole in the ceiling and a female voice will start announcing sound credits for the game.

Battle Rattle
As you are playing, pause and input LEFT, LEFT, RIGHT, RIGHT, Y, X, X, Y, UP, DOWN.

Chainsaw
While lpaying, pause and input UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, Y, X, Y, X.

Video Gallery
How to unlock:You need to complete the game.

Unlockable Secret Sword
While playing, pause and input UP, DOWN, UP, DOWN, LEFT, RIGHT, LEFT, RIGHT, YELLOW, BLUE, YELLOW, BLUE.