So the too buttons below the START GAME button do this:
FIRST BUTTON: resets missions AND map/location data (meaning just the locations you find on the map NOT the base you build in
SECOND BUTTON: resets just map\location data
If you want to start all over again erase the folder in your appdata folder Sand_Alpha.
I hope that helps to clarify things. :)
No no, lol , I want to play with my base i have made but with the map and missions reset. However, when I start the game with itch.io all my progress is loose I have nothing, I play like a beginner. But I can restart exactly where i was before the update, by pressing "Sand Alpha" in my folder.