Taka odpowiedź dostałem od Nico tworząc maila magoth.ru@gmail.com
Im not aware of any other backups besides the versions (dropbox leak and mine). The development stopped after the first chapter has been finished - there is no full version. However, my backup includes internal documents with the planned story and the contents of the next chapters. And some later parts already have been created in the world mesh and some NPCs have been scripted and placed in the world, but mostly without (or dummy) dialogs.
All the stuff is still in your private SFTP folder: sftp://magoth@nicode.net