Thanks, especially for taking the video. It was fun to watch someone play :)
Game indicators aren't clear. Fast development creates some issues ;P
Health doesn't rule death, it rules the speed at which the music plays ( also the speed at which the Space shuttle repairs). Getting the scrolls gives health and increases the speed at which the music plays. The playing time is at least as long as the moonlight sonata(~15 min), and this time gets longer as the music slows down :D