Not bad
In fact I liked it. (gave you 9 on sound, because of Back in Black ^^) Whatever technique you guys used, the animation was really smooth and it nice. But maybe you should consider a texture for the background. I know there are minimalistic animations like Madness, but I somehow didn´t like that plain red color. What about putting some light/shadow effects on it. And add a plot *g*. There are yet too many "random guy pressed button - gets punished"-kind of animations out there. But overall as I said it was nice. I´d vote 4/5 but I can´t since it still is under judgement :D