The idea is not bad but take out the sprint option. I ran through all of your jumpscares and even saw how they popped in and out afterwards because I was too fast. Simply removing the sprinting would force me to see the jumpscares as intended. Idk how people make these games, but if you can try adjusting the walking speed a little instead of letting us run that would make the game alot scarier.
Also try giving the enemies hitboxes because I literally ran through your first big jumpscare (the one with the woman), stood behind her and so the whole jumpscare and the 'build up' afterwards made no sense. So all in all it was a good idea with the darkness being your enemy BUT the sprinting ruined it.