I also got stuck in the staircase in the house on 1.3. Was the top of the first stairs going up to the glyph in the middle of the staircase that goes up to the second floor. This was a nice thoughtful game, though! Some feelings in there I could relate to.
The stairs have been a real bugbear for me. If you hit Q you can set the camera into first person. If you have to restart, from the start screen hit F6 and it'll send you back to that scene.
