Promotion, promotion, promotion.
It's by no means bad, it's basic but enjoyable. Even though the difficulty rating of the levels is erratic. I would question the wisdom of pointing out the fact that it's a fixed version, as it may result in people instantly voting 0. I also question the wisdom of prominently promoting what looks like a Kongregate clone with extra emphasis on level creation on Newgrounds, and demanding you sign up to said site to enable use of the editor. It feels that you're are shouting in my face to go to this site, especially the way that the campaign levels have to be downloaded from this site. Although, I suppose that's no worse than Madness Accelerant demanding you to beat the game in Newgrounds to unlock the harder difficulty, or using something like GamerSafe.
Ultimately, the game is decent enough. It's the promotion and the blurb that drags it down slightly, in my opinion. But mainly the promotion.