I honestly didn't think it would be any good. It really wasn't bad.
+Great dialogue and overall writing
-Sloppy, flat art
The art was really the biggest problem. It was very sloppy, squiggly, and all out-of-proportion. The animation at times was mildly-decent, but other times it was just choppy and not very good.
However, it's writing is just fantastic. It sounded like I was watching a real movie at times, it was THAT good, combined with the great voice-acting, of course.
Overall, it seems to be another one of those movies where the best reason to watch it is for its dialogue and storyline. Other than that, there's not much to offer, however I still have to say the animation was nicer than a lot of other styles I've seen before.