Not bad, I like like the triangular design of the checkpoints and the general atmosphere and colour scheme.

The start without boost feels a bit wierd though and the section without wings could perhaps use a bit more of an indicateor there and possibly a second cooldown ring. The moving saw blades near obstacles can also be a little tricky but personally after a few playthroughs I like the challenge.

Add some signs on the track to warn the player about abilities (like the start without booster)