Neat little game, if you made the engine good work! It kinda reminded me of games you'd see on here a long time ago - there used to be a plethora of games modeled after retro games but more violent and absurd. I've got a few suggestions: I think that the normal bullies should be more difficult and enemies should not be allowed to leave the screen once spawned. The ninja boss killed me right away by exiting the screen and throwing projectiles from there. Some changes in scenery between screens where enemies appear, even minor ones, would also help the flow of gameplay. It has flaws but is a cool game and if I were you I'd be proud of it. Best of luck dude!