I don't know if this is a problem from my PC or this game, but my progress files keeps on disappearing right after the moment where the player is Shuni's perspective :(
But, the story is nice, interesting and I love the easter eggs.
1. Did you put the game's folder in the C disk, or somewhere near the system folders probably (the ones that do require administrator permission)? Try to move it to disk D, or (in case you have only one disk) to one of the user folders (Downloads, Documents etc.)
2. Did you unpack the game from the archive before playing?