It's a cpk archive (CRI) but the header with the information about the files is obfuscated. The content instead is in clear-text, in fact it's possible to see "CRILAYLA" magics in it. I have no solution at the moment about decrypting the header, maybe someone else will have more info.
To anyone interested who doesn't want to download 1.64 Gb of the whole archive: I have attached the cutted archive to this post.