It's an enjoyable follow up to the original. The first Pacific Rim was a fresh, original take on the giant monsters genre. This sequel is something of an "if you liked the first one, let's do it again and have some more fun" experience. It's derivative, but not repetitious. It remembers what made the original work, and serves up a second helping of it. So it's not the ground-breaking achievement the first film was, but it's still a relatively pleasant show. If you enjoyed the first one, you will likely enjoy this one as well.