Quite a fun demo. I personally find the lack of any ability to correct myself in the air to be a tad frustrating. However, I definitely think it's worth fleshing out and building cool environments to run around in. I managed to beat the first map in 17.281s and the second map in 19.004s.
(Also, I found a bug with the camera. If your camera isn't level when you reset, the limits of your rotation will be offset.)