I played the WHOOOLE thing.
Wow. Addictive. It took me hours.
Good job. I enjoyed the game. The controls were great, and I liked the dual attention you forced between the troops and crossbow. After I upgraded the bow, though, I just amde a wall of arrows that made the game pretty easy.
The only complaint I really have is after you beat the game, you need to have something more than text telling you that the game is over and you can replay levels for a faster time or higher score. I don't know... maybe a kick ass picture of The End burning and frozen and electrified with an Arch Angel standing over the crumpled mass that was just recently the structure of death.
Overall, I would have to say that it was good. It took me away from doing anything else today, so it musy have been good.