Hi. Really liked it, well done! The very first few runs very quite challenging and failing and trying again was satisfying as the game truly benefits from some skill improving.
My personal suggestion going forward, especially as you mentioned you want to keep working on it, is to work around the difficulty level: once enough momentum is gained, I found myself to be almost unstoppable. I failed many times very early, but the first time I passed the, say, 20 seconds of gameplay I immediately reached the end.
Another (minor, after only three days of jam) point is the shadowing of enemies: for some reason I get confused by them having "infinite" shadows (suggesting they are taller than the camera view).
Other than these, I really enjoyed it! I totally agree this should be taken further because it has potential!