We're hoping to get an update out soon-ish, and having a final score at the end would definitely be something I'd be happy to include!
In terms of the walls, they were originally designed to mostly help against pirate footsoldiers, but we didn't have enough time to get the ground-based combat in the game. The barracks was also supposed to be where you made your own footsoldiers from.
I'm glad you enjoyed the game! And thank you for the feedback.