JamesCGamora;141114
Codes present in the game packaging are usually 1 time use.
Example: Flashback map pack in GoW2
::edit::
Actually thats a bad example…
I don't know, I was thinking more along the lines of the Smackdown games and Legends of WrestleMania where codes are used to unlock alternate attires, which also can be unlocked by playing the game.
Though this isn't THQ/Yukes that we're dealing with on this particular game, so Terminal Reality may do it differently. I just hope that that ghoul is unlockable some other way though.