What started as a pretty standard shooter evolved into something really cool! I love the progression of the upgrades, they come at just the right times to make the player feel like they are getting better and increasing in power. And I Loved the color design of the end sequence. As others have mentioned, it would be great to have some form of health indication for both the players and the enemies, and a few of the scene transitions are a little abrupt. But overall, great work!