Visually, looks very nice. I love the cel-shaded, isomorphic look you're going for.
In terms of gameplay, there doesn't seem to be much there, just endlessly repeating levels with two enemy types. I wish there was any sound besides the meteor banging.
The fact that you can use the same weapon in both slots is kinda funny - it would be nice if there was a more noticeable difference (like meteors coming out twice as fast). And it would be nice if there were more than two weapon types, every run just feels the same currently.
Also, fences are kinda just a suggestion... both the enemies and I were able to glitch through them pretty easily, which was a problem when I fell outside the map with no way out (besides quitting the game).