Hmm. It seemed like in the fourth wave there were the green barrel-throwing guys over in the bottem right where it was hard to shoot them, and then I ran out of bullets because they were all over there.
And even in fullscreen, the game was fully surrounded by black and it still wouldn't fire if I clicked outside the game area? So fullscreen didn't make the mouse control better for me.
But yeah, clever concept, and nice art.
--Josh (part of teamwintergreen for the jam)