Well then if your going for an adventure, sneaky kind of horror experience rather than messing around with puzzles, its always good to leave some areas with triggers activating some kind of event like a jump scare or add some little things that the player can interact with like flashlight(it can be turned on and of), some sort of button that can be used to open doors, or pickups (locks or a password pad) things the player can read like papers on the ground. i am not a horror game guide guru or anything i also just started making my first horror game, any ways good luck :)