Another game where I had to switch to Chrome. On the version of Firefox I have, some of the graphics just completely failed to display, meaning the chain was invisible (and the sun just seemed to be moving around mostly randomly) and I was fighting a black square on a black background.
Now that I've played it with graphics, I spent most of the time just focusing on making the sun go where I wanted and ignored the bullets (since you don't actually lose if you get hit), and if I'd actually tried dodging the bullets as well it might have been too difficult for me. Also you can easilybeat all the levels except the third just by going up and down over and over again as long as you don't move left or right at all. Interesting idea, though.