I didn't realize this was going to be an endless runner (flyer?) when I watched the progress in the discord. (It's possible that I missed that while staring at the pretty pictures, hehe)
It works well as an endless runner! It's pretty challenging, my highscore was 1705. The graphics look great, and the music and SFX fit nicely.
If I had one issue, it's that I feel a little of XCVG's pain on this one... I didn't get extreme eye strain or anything, but the movement speed of the environment was a lot for my eyeballs. I had to sit back pretty far, and even then I could only do 2 runs in a row before needing to rest them.
I do understand that will probably be tough to address, given the need for speed on some of the environmental obstacles. But if the background was a little slower, I think it would help in that regard. But I doubt this effects everyone, so take this suggestion with a grain of salt.
Overall, really nice work!