Really interesting and immersive gameplay! The audio is great and was designed in way which gives the player many informations, such as when he hits a wall or is close to the exit.
I tried to play it until the end, but I rage quitted at level V, because the monster just charges at you and screams very loudly, and going sideways leads you nowhere, so maybe it's bugged or I was doing something wrong. :(
Nonetheless, that is a really great and creative entry, congratulations!