Really nice demo that reminds me a lot of classic RPG maker games with nice characters (I can't really tell you how much I like the designs) and amazing art, this demo has lore development, puzzles and scary stuff, really a little of everything.
My only suggestions, like other comment mention would be to tone down a little on the CRT effect because it gets heavy on the eyes after a while, specially since it is in a transitory area.
And also mind the placement of the save points in a game where you are going to die repeatedly that's really important to not frustrate the players.