Clicking "Exit" in the game currently quits to desktop immediately.

Since there's no autosave when you do quit, the player may have a substantial amount of ground to cover before getting back to where they were (e.g. I had to quit in the middle of the long and mildly frustrating mirrors puzzle in I. Abyss only to come back and needing to do it all again from the start).

There are two features that would make this better for the player:
1. Have an exit dialogue confirming the player wishes to quit and informing them all data will be lost past the last checkpoint

and/or

2. A save and quit function.

Thanks for considering this feedback.