This sequel was a definite improvement from the original Twilight. The writers did a much better job with retaining most the book's structural integrity.
That being said, there are some weak points in the acting. In the rain scene, you can definitely tell the actors are freezing as they can't control their body shakes. But it was shot in Canada, so I'm sure it was mighty cold.
Also, some of the makeup was a little more than obvious.
The special effects did an excellent job creating the mythical werewolves and Edward's body was even more diamondesque this time,
Overall I loved the movie and would definitely see it again. I think it far surpassed Twilight.