Neat concept, but the main the issue that plagues most of these maze like games is the lack of notable or unique areas to use as a point of reference. Since all of the walls and background are the same no matter where you are on the map, it's hard to tell what places you have or haven't been. Either changing some of the tiles in certain areas or changing the color or shape of each door to show where one will take you will make navigation a lot less tedious.
Also I'm not sure if this was intentional, but there are some areas that have an invisible barrier that pushes the player down. I believe this was meant to push the player to look for the door with a flipped gravity to be able to get past, but I have no idea if I did cause there was no visual for the invisible force.
Still nice concept to work with.