This was a good cartoon. The thing I did not understand about it was where it was really going. I have never heard of this "Attack On Titan". I imagine it's another anime. I thought you were going to go through various anime with this. I guess I'm being too whiney, because it is a well done cartoon.
The best thing is probably how good the animation is. That song (or rather parodies) never get old. It was nice to see parts of those fight scenes. It was, however, a bit too short. I think you could have had the full song, or was that the full song?