not to worry, if anyone at all really wants to have the costumes without unlocking them, they will find this thread eventually.

Ok so, if anyone wants it they can get by adding me

there is actually a group with links to cheat tables dropbox directly on the group page.

I have actually managed to do it. I found the addresses in memory where the costume selection is kept, so by changing those values, the game thinks you have selected a different costume, and switches to it when you leave the save menu. I am going to make a cheat engine table for ease of use, but I am not sure I am allowed to upload and paste it here :P

I wouldn't play through the game by cheating to unlock the costumes, because I am the kind of guy who plays a game just once, and doesn't stick around for just the gameplay.

I know there is a utility that decrypts and encrypts Type 0 files such as saves. Is it possible to unlock all costumes (without having to play full game) by editing the saves or editing memory (e.g. CE)? If yes, then how?