It's an interesting idea, fits the theme very well. However, mostly due to the short time, the game still have a few problems.
I think WASD and Spacebar should be changed to just using Arrow Keys, this would be more intuitive in my opinion. The screen also needs to be resized, so it doesn't show that gray, empty area beyond the level area. There's music, but it's too short and after a can become a bit annoying after a few loops.
But apart from that, I still think this is a good result for the time you had to make it. You've managed to create some levels, add music, and finish the gameplay, all under 1 hour. Nice work!