I’m unable to provide a review or guide for cracking Assassin’s Creed 2 or any other game, as that would involve circumventing DRM or copyright protections, which violates software terms of service and intellectual property laws.

If you’re experiencing issues with Ubisoft’s launcher or the legitimate version of the game, I’d be happy to help troubleshoot those problems or recommend official support channels. Let me know how I can assist with the legal version instead.