Very nice soundtrack! I loved how it kinda changed pitch when we got hit.
The collision on the fox is a little off, though. Most times I didn't hit any cactus at all, but was still slowed down.
The mechanic of losing more time/time slowing down when we got hit is quite interesting, but sometimes when I got hit I would be stuck on the same cactus and the next one, and it would be like a chain of hits impossible to avoid, as I couldn't jump over any of them anymore.
Anyways, great job! Gonna listen to some more of this song before going to the next game!