First Ludum Dare and I now know why veterans say to give ample time for deployment. I was doing periodic builds throughout the last two days. Everything seemed fine. Then I did a final WebGL build and it all fell apart. Half my colliders didn't work and my audio was all sorts of jacked up. Lesson learned: Don't use Unity's GameObject.Find if it can be at all avoided, and don't try to play audio in the Start() method.

This was a blast! And I'm really looking forward to Ludum Dare 45. How to go play some games!