This is exactly the kind of idea that fits great into a jam theme and plays well with its mechanics, but the browser build loads pretty slowly, which dragged the experience down a bit for me, and there were also big loading stutters when playing the downloaded version. Could also have really used a sprint button, but otherwise... This has promise. I'd even say that if you polished it up, it has the potential to be a decent spiritual sequel to Portal. Good work and congrats on finishing.