I loved it. It was fun to play.
It was certainly a challenge, except there were too many knights in my keep, and that's what brought my rating down one.
I'm not sure if you were trying to stick to the movie, book or neither one. The castle was okay, I'm not sure that the farms and tower on the deeping wall were necessary.
Map Design: 5
The map looked good, some Helm's Deep maps are just a wall and a keep with some cliffs behind it, you actually altered the terrain so it looked good. Oh, and your initials in the lower right corner of the map was amusing.
Not really much of a story......