Really cool! The idea of having the maze building and enemy killing linked together is super clever. I tried just going for kills, but found I would quickly get my self pinned into a self made corner this way. It really forces you to think ahead and plan, assessing the potential consequences of placing walls! (despite this, i only managed 10 points)The control scheme did feel a little awkward, I think mouse controls for the walls might have been more intuitive. Aside from that though very nice job!