A classic idea done well. Not sure what the second bar on the character is for (some sort of stat level up?), but I love that as you upgrade the weapon you get different sounds. Made it into the spider levels. I might suggest dropping the volume down on the squeak sound, just because it's a little sharp as is. Also it seemed a little strange the coined dropped pretty far away from each spider. But those are nitpicks. Overall, a good job.