The graphics in this movie were pretty awesome, but the story line was crap. If you learned about native Americans in grade school, you pretty much already know the story line, except the Indians win this time.
I watched this movie with a friend while drinking, and between the two of us we predicted the majority of the movie. The best comparison of the movie, that I can remember, was it's like a movie the Syfi channel would write, but with a much larger budget.
All said and done, it evened out to be a good movie in the end, mainly because of the awesome graphics. I wouldn't mind watching a second one, as long as they hire a new writer.