There was little introduction, and the whole film sweeps by in 1 hr 45 mins, with little character development, and little explanation of what's going on. I found it hard to care about the characters, and to comprehend the writter's world. It was stressful to watch. As opposed to Lord of the Rings which is slowly introduced with much explanation of what's going on and why. I don't know why they didn't make this film at least half an hour longer to take some more time for this, and to slow things down.
I liked the story though, and presume the book is much more satisfying. The fantasy world is beautifuly depicted visually. Perhaps the film is meant to be watched repeatedly till one understands all the finer details.
It is very much like a flip side to Lion Witch and Wardrobe. Shame they may not come out with part two, as there are loose ends at the end of the film which add to the unsatisfyed feeling.