Thanks for trying it out. Sorry to disappoint early. Alt-tab does not work properly with the game. Because of this a Ctrl-M option which accomplishes the equivalent was added but only works once you are in your quest.
When creating a character, points can be taken back by right clicking with mouse or left arrow key when attribute or skill is highlighted. Once last point is distributed it is locked in though. Rolling all greens to start is good to begin but will cause a delay later in progression.
The manual is not packaged with the demo yet but you can download it from the itch page for free also. It explains character creation and has some other good info like a map and bestiary.
Hope you will continue to check out the game and appreciate the feedback!