This is very cool. I love how you matched the color and style through and through. I loved the music as well. I liked the side scrolling action take on the survivors model too, that brought something unique to the idea I haven't seen yet. My biggest feedback is that sfx would be awesome for this one and I'm sad it didn't have any. It made it hard to tell if I was getting hurt or not as well. I also didn't love how you have to click with you mouse and then quickly jump back to using j and k to avoid getting hurt. Like others have said too, the time between waves was long. I think maybe that was intended so that you could regain some health in between waves, which I appreciate, but would have been cool to just regain it automatically without having to wait so long. I would love to see this more developed!