Gameplay [6.0]: Decent. I just can't get enough of games with upgrades. The enemies are quite annoying, but the bosses are actually challenging (that's good).
Graphics [5.0]: Could be better. Background was of average quality, but somehow enjoyable.
Audio [3.5]: Mediocre. The menu song was actually enjoyable, however the trance song was very boring and repetitive. The boss song is good, though. The sound effects were pretty decent too.
Longevity [5.0]: Relatively short. Still, it's a pretty good idea for killing 10 minutes of your time.
Innovation [7.0]: The concept is very good, however misrepresented.
OVERALL [5.3]: A decent game with potential, but lacking in several ways. In other words, please improve it.