This was great! You should add to the description that you use WASD to move. I really liked the concept of having to balance shooting the baddies vs. buying better weapons and paying to unlock the walls between zones. The mines were great fun :) (although when I ran out of them, the bullets I was then shooting looked like mines!) - the only issue I had was needing to move to avoid baddies and try to buy something at the same time - required quite a bit of finger kung-fu to pull off without dying.