Passable Flappy Bird Clone. Everything seems to be working in order, but I've seen a million of these types of games and I've grown tired of them. You did come close to breaking the mold though with that power-up that lets you break through the pipes. If you return to this genre, I want to see you do some crazy stuff! Between this and the Nyan Cat game I saw earlier, you're games so far have been unoriginal, but polished. You have potential, so don't give up!
A more minor nitpick, but you should strive for more diversity if a sound effect is getting repetitive. Dash yelling "yeah! yeah! yeah!" over and over again is a bit grinding to the ears. The best way to fix this would be to alternate between 3 different sound effects at random. If you want to get real picky, you can bend the pitch very slightly at random too :P
Now don't get me wrong, Dash is awesome ^_^