Neat little game! The game felt pretty nice to control and the variety in obstacles and challenges was a nice feature. It was a little too generous with lives though, since even though I was playing recklessly I still ended most levels with 5 or so lives left, although having too many lives is much better than not having enough. I didn't notice any glaring bugs either, although the tutorial says the up arrow can be used to jump, when it's actually space - that was kind of confusing.
The art was nice and simple too, and it worked well with the particle effects. The sound design was also satisfying and the music was fitting as well. Overall, it was a cool platformer with a surprising amount of content, so great work!