I've disabled the resolution dialogue because I hate it, but you bring up a good argument to keep it until I get an in-game resolution options.
Camera angles are definitely something I'm experimenting with at this point, thanks for your feedback, I will reflect in upcoming versions. Atmosphere is something I consider very important to this type of game so I'm putting a lot of focus on it, even this early in the game's development.
The demo does end when you unlock the door yes.