Looks like it has a lot of potential! Hope it turns out well!
(Just a word of advice on the nightmare thing though - don't over use it - too many games get boring because "It was all a dreaaaaaam...!" and having it just be in a nightmare world means that it is devoid of consequences - it becomes a haunted house walkthrough with maybe a few jumpscares but nothing to invest the player because nothing matters - after all, it is just a dream. But I can't wait to see what you do with the game! :D)