Brilliant yet frustrating
First the negative stuff. I have to say that the completion of levels relies more on the random enemy patterns than actual skill. I've died numerous times due to there being absolutely no enemies for ridiculous amounts of time. It would also be an improvement for the green bar to fill up as you destroy the enemies and not once you've hit the ground.
However, this has to be one of the most original games on newgrounds, the graphics are great and everything works brilliantly apart from what I've mentioned above. Its a great idea that could have failed spectacularly but you've pulled it up very well.