It's a pretty simple and nice concept, the only thing I would fix is that I can easily just spam the shoot button and survive very easily. But still, great job!
Thanks for the feedback. But it is also part of the game to get hit. The more you get hit, the more enemies spawn. Goal of the game is to find out how many enemies to spawn and still to defeat enough of them to get the highscore. If you hit more enemies, less will spawn.
