Avlynn (the woman) ruins this movie
I actually enjoyed this film much more than some did. I enjoyed some of the look of it, the grittiness, the darkness. I very much liked the irascibility of Merlin.
What ruined it for me was one element -- Avlynn, the "daughter of Arthur." Truly the most disagreeable female character I've ever encountered. She was obviously supposed to be some sort of feminist heroine, but just came off as bitchy and mean. Worse, she was way too old to be remotely attractive (even with that fake-looking wig). And the idea of some scrawny 40-year-old woman in the Early Middle Ages punching knights and fighting with swords? Laughable.
So all in all, a reasonably good film that was ruined by feminist nonsense.