My god, what a trip. I enjoyed this way more than I'd feel comfortable admitting. I had a smile on my face the whole time. Is that bad? :)
The amount of juice is just perfect. The camera shake, the tails of blood on the floor. The screaming nerds. The heavy metal riff and speed boost on a killing streak. Just so much polish! I also really loved the screen wrap. I think it fits the game perfectly. My W key was down the whole time, literally. I had no idea what the secrets were or how to get them. I got some of them randomly and still didn't know what or how.
And on top of all of that, you even managed some storytelling, which was pulled off very convincingly. The setting and mood and theme usage is brilliant.
As a minor annoyance, the disclaimer popup was always sticking out from the bottom of the screen. And speaking of those warnings, I thought a little bit of it was fun, but maybe I thought you had a bit too many of them (and again at the end), so it felt a bit overbearing.