I laughed out loud the first time I turned the character around and saw his face. I don't know what I was expecting to see, but it wasn't that.
The concept is fun, but the way the camera moves does make it extremely difficult to navigate - and it even sometimes crashes the JavaScript in my browser! I feel like the culprit might be some kind of post-processing effect that you're using, WebGL doesn't handle the more complex graphics as well as a standalone player does. But I can understand why you built for WebGL, as that does make it a lot quicker for people to access the game.
I loved the music, it gave a sense of urgency to the game, and the fact that we're playing a small character in a really big house makes it feel like a playful adventure - even though we're trying to avoid melting in lava!