@7767 the official walk through is here:
You must be registered to see the links
It only goes up to 0.87 at the moment
Link to that rather than putting a mega link in the OP as you won't need to keep updating it and the mega link won't go dead.
For everyone requesting a walk through, the link above is in the FAQ contained in the game folder.
I've had the deleted save game issue, it started when my laptop ran low on battery and went to sleep. To fix it I just had to exit the game completely and reload my last save. As with any in development game you should be saving often, at least once a day. If you have to replay content just hold down ctrl during any dialog and it will skip through all the text and stop at any decision points. (I'm windows 10 and have the latest updates).