Pariah

Unlock all single player stages
Go to the "Settings", then choose the "Cheat codes" selection.
Push Y, Down, R, Down buttons on your controller to get access
to all single player stages.

God mode:
Go to the "Settings", then choose the "Cheat codes" selection.
Push Up, L, X, L buttons on your controller to enable invincibility.

Unlimited ammo:
Go to the "Settings", then choose the "Cheat codes" selection.
Push Down, Up, Down, Y buttons on your controller to receive
unlimited ammunition.

Location status
Go to the "Settings", then choose the "Cheat codes" selection.
Push X, Right, L, Left buttons on your controller.


Unlock gameshop's multiplayer stages:

Gamestop multiplayer stage
Go to the "Settings", then choose the "Cheat codes" selection.
Push Left, L, X, Left buttons on your controller to get access
to the Gamestop multiplayer stage.

Best Buy multiplayer stage
Go to the "Settings", then choose the "Cheat codes" selection.
Push L, Black, White, R buttons on your controller to get access
to the Best Buy multiplayer stage.

Toys 'R' Us multiplayer stage
Go to the "Settings", then choose the "Cheat codes" selection.
Push Left, Up, White, Black buttons on your controller to get
access to the Toys R Us multiplayer stage.

EB Games multiplayer stage
Go to the "Settings", then choose the "Cheat codes" selection.
Push White, Y, X, Black buttons on your controller to get access
to the EB Games multiplayer stage.