Good, not perfect.
First off, the graphics of this game are really good. And surely if I'm playing with the awful graphics mode, the HQ version must be even better. I agree that the boss is a little too much about memorizing patterns, but it's got some strategy and skill involved as well, so you only lose one star for that. Lastly, the gameplay is a little buggy. Sometimes I'll hit the edge of the screen and just get stuck for whatever reason. It can be fairly irritating, especially during later portions.