Played a good 40 minutes until I got stuck on geometry on a mountain.
The game says "It's intended that you play the game in one sitting", which gestures that whilst it's recommended to play all at once, you can still play in multiple sittings. However the game doesn't have an autosave so I don't know why they would word that sentence in such ways.
Had to watch some playthrough, which seriously ruined the experience as I didn't want to sit through another good 40 mins of the same copy + pasted gameplay. Please make the game more user friendly