Fun game! I liked the idea of assembling an army and watching them fight with another army. I wasn't sure if I completed the game or not, I just couldn't find any more red guys. The shooting felt pretty good and I liked the blood effect to show that I was actually damaging the enemies.
If you wanted to improve, I suggest having a pop-up or something to explain what the rule you are breaking actually did.
Overall, a really fun entry!
Check out my game if you get the chance!