I like the beginning where you fall through the fake floor. It catches you off guard in a way that's engaging and felt intentional. Fake floors/walls are a mechanic that's easy to be frustrating, but the game as a whole uses them well. Good job on accomplishing that.
The lack of any music or audio is obviously a big missed opportunity. Game felt pretty short, too; it ended right as I felt it was getting started. I was a little disappointed, honestly.