Cool demo, loved the atmosphere! I would love to see an option to invert the mouse though. And possibly a sprint option, unless the movement speed is a deliberate gameplay choice for some content to come.
I will try to add an option for inverting the mouse in a future update.
Regarding the sprint, it is currently something that can be unlocked later in the game: but several people mentioned it to me already, so I think I will just make it available right from the start :)