Too much mouse sensitivity, trying to use ESC and see if there is a mouse sentivity slide but there wasn't one and after I click on play you reload the entire scene, you should have added a resume feature. The music and the intro is really nice and good, but if you accidentally pressed ESC and going to watch again the intro, you should have added a skip intro thing. You could have added a simple checkpoint feature so you don't need to pick up all the screws at the start (I'm not sure if the added difficulty not having checkpoints makes it better) or that you didn't know how to put them, you could added so you maintain the amount of screws you have picked up, but the rest is nice, thumbs up!