This is so fantastic! The core mechanic is cool and well-implemented, and I am totally blown away by the level design. I'm so impressed that you were able to fine-tune such large, challenging levels in just a week. This is really fun, great job. One of my favorites so far from a pure gameplay perspective!
The music sounded a little cheap, but it was really neat that you had two separate tracks that mixed louder and quieter depending on which side you were on. I loved the homemade sound effects! Similarly, the art is unimpressive, but it is a very charming cohesive style.
Really awesome job. I wish the world had more games like this!