I liked the simple clean art. It's clear you didn't have much time to add more stuff sadly. Gameplay is easy to pickup. This can be a nice game with more content. There's few bugs and ways to cheat :D. First you can just go out of the room with your mouse and they can't shoot you there. And if you let go of mouse you are stuck there. Second i got sudden white screens few times and i had to refresh the page. I was able to get to wave 6 without cheating. Overall nice game and theme!