Great platformer, loved the flag mechanic. People are comparing with Celeste but I honestly got more Getting Over It or Jump King vibes with the way that the one big level is layed out :)
If I was to improve anything it would probably be the few moving platforms that you have to jump onto when they're just out of frame of the screen. Those jumps felt a bit unfair imo, but perhaps that's by design!
Love the music too. Great job dev!