This is a super interesting take on a tower defense! I wish I could still use my villagers during the raid though because the raid takes a while and I want to have something to do while it occurs. If you let the player continue to manage their population while the raids occur, it will be unlike any tower defense I've seen and I could see the idea doing really well. Really cool population management systems, I was really excited to build more but I couldn't reselect my guys after round one. Great job!