Slow, ugly, and violent.
Violence without action, this is blood and gore at its ugliest and most pointless. When I saw the word "Massacre" I became excited. "Massacre" usually implies more deaths than simply a couple, and would hopefully include a bit of moving around. Nope, it's real slow. Granted they're turtles, but perhaps you should have done a lemur park massacre. Artwise, the charactors and objects are very well drawn, but you didn't bother to take the time to really animate them, the baseball bat especially dissappointed me. As it was, I found this to be senseless violence, without any of the dancelike beauty of killing that can be found in Madness and other various kill-oriented Portal Flashes.