Oni Cheats

Before you can use the codes, you must activate them. If you haven't beaten the game yet, then you must hex-edit one of the files.

(This is from PCGameWorld.com)

''Open up the 'persist.dat' file with your Hex Editor. Go to location 0x44 and change the value there to 07. Once that is done, to run the cheat codes press [F1] while in the game to open the menu and type in the cheats you want to use.''

(If you don't have a hex-editor, you can get a free one at www.download.com)