Great! I'll write quite a bit as I had lots of thoughts and this has a really good foundation/potential.
Mechanics and feel is wonderful, very impressive and inventive! Level design feels quite scattered and random, which kind of makes this feel like a "flash" kind of game instead of the physical storytelling you can find in other steam rage games. Playing the later parts I see why it was done this way, and it was exciting, but this difficulty curve lacks the lower 60%! Lots of opportunity to expand this into a fully fledged journey, without really needing more mechanics or content, but mostly worldbuilding (level design-wise).
Controls aren't precise enough (arrows turn you very fast), mouse control would have been great for more granularity. I don't think it should have a jump preview, but it would benefit from a "turn 180" button! Also subtle slowmo when at high speeds for reactive normalization. Zoom out is a must. I think the zoom level decision was made to stay pixel perfect? In the end it just makes it unfair as the level design requires you to see what's ahead.
Style is incredibly cute, I think some basic set dressing with the current assets on a more organic-feeling enviromental curve would have multiplied the overall quality!
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