I have a bit of a soft spot for this game in it's incompleteness. I like where the game finishes up because the character can't progress (because the dev couldn't progress). It says a lot about the pressure of building a game over a weekend
The Aspect Ratio does well to frame the level, keeping it all in one screen but still giving it a good amount of space and size. But other than that it doesn't factor into the game as much as I'd like.
The pixel art is good on the whole. Some platforms, blend into the background until you collide with them. So there's some work to do with readability of the level at a glance.
Overall though, it is an honest attempt and shines in that honesty. A bit of an artefact.