Codes
Go to options, then selest the "codes" option. enter the following:

IPULATOR
... Unlock all levels
DEXTERCROWLEY
... Unlock all movies
SIRULLY
... Unlock all gallery
DOGTAGS
... Unlock all skills
SHARDESOFGLASS
... Unlock Black Book
STATEYOURNAME
... Unlock all characters
BABYLONTRUST
... Max health
VANCEDALLISTER
... Max skills
MARCUSECKOS
... Infinite health
FLIPTHESCRIPT
... Infinite skills
GRANDACELIA
... iPod (?)
NINESIX
... Unlock all legends
WORKBITCHES
... Unlock all beat down arenas