This looks and feels really neat to play, but there's not enought content for me to do a real review sadly, So I'll be owing this one.
I love the vibes of this tho, the contrast of the windy white and silent black are certainly an experience, I'd love a full game with this aesthetic.

Only real critiscism I have Is that the last jump after the second checkpoint Is a little too pixel perfect, to the point of coyote time being mandatory for it, wich is something you should mostly avoid on level design. (at least on the beggining of the game, jumps like that are fine if done on later challenges since the player will already be more confident with the controls and physics)

I'll check back on this if there's actually anything else to do (I'm not sure if I'm just missing an obvious level boundary or not), but even if there isn't, this is a good tech demo, I'd say! I'm always a fan of the vibe of Pico8 games, with Celeste classic and the like, and even with just a few platforms, the art/animation and sound effects really did a good job conveying that same feeling! Please tell me if I'm missing something, but this was interesting either way! ;P