This is probably up there with Pogo 3D for the hardest demo of DD50. I only managed to get to level 7. I like the art style and the music is alright. But fucking Hell is it difficult. My old keyboard couldn't really handle the precision I needed for the movements in this. Although it's not the only thing getting old.
Although it's not my thing, I can see there's a good amount of effort put into this.