Great game, could honestly see myself sinking some time into it on a train or something as a mobile title, however, I don't really believe it matches the theme very well. The only time I can really see the "Only One" theme shining through is in the split second before you lose, which doesn't seem particularly relevant.
Stylistically I really enjoyed the visuals and audio, I feel like it really matched what you were going for and should be commended on that. The gameplay was solid and a little stressful (which is a good thing) and really causes you to keep up a hectic fast pace.
Sidenote: I had trouble running it on my pc. The web version (chrome) lagged a lot to the point of it being unplayable, and the downloaded version functioned perfectly fine, but the UI constantly hovered in the middle of the screen (however it was not distracting to the point of believing it was an intentional choice at first).
Great submission, would support a full release.