Playability: This map took a few attempts before I managed to crack it and kept me interested each time. My only question lies in the longevity of it, but still good and fun to play.
Balance: A tough map, use your troops wisely. Very much in favout of the attacker and the hard level is about right. Plenty to do to ensure you follow the invasion right to the keep.
Creativity: nice idea, it tests your defensive skills and the different types of defence are interesting.
Map Design: I have to be honest, I thought the map was a little dull. Not much use of the terrain tools, no real castle to speak of (maybe not required in this map, though?) and a bit on the plain side, which is a shame.
Story/Instructions: Unfortunately not a great deal here to go on. No word document in the zip. A bit more imagination would have been nice to see.
Still, a good first attempt and the map was fun. Keep 'em coming!