It's ok, I guess
You should really add more, or something...I'm not saure what, but a little extra something to make it interesting. I could make this in a few minutes, but the show is what it's all about. Instead of having a polygonal dot as the cursor, make it a gun, harpoon, etc. and instead of plain old black dots, make them heads, or targets or something, and add sound affects relative to the weapon and target. Also, a little less time would help too. Maybe make it so you have to kill a certain amount of people in the first level, then you get to the next level. Then have a boss that just motion tweens around until you hit him about thirty times. I dunno...just my two cents. Good job otherwise, though. The music was nice.