Same here, I liked it, but it was confusing at first. I also expected the enemy to do something (maybe because of our game...) in the beginning. I'd also love to see it controlled by mouse, as the menu does. It throws one off guard.
The Characters are awesome and Momma is a great idea! Incredible what you did alone in just one day.
While I like the take on Kingdom Rush, be careful about legal stuff there.