Too long to ever possibly be fun. I hate how, at the end of the game, you are avoiding all of the power ups to avoid losing your rare weapon. It makes the game more frustrating than it needs to be.
Honestly, one of the best arena shooters I've ever had the pleasure of playing. All arena shooters should be judged against this one. The cream of the crop.
Ugh. Absolutely amazing game, marred only by the fact that I really don't want to do level nine over again after Kongregate didn't count my completion.
Everyone's right, the difficulty really increases very quickly after 100. But, what's even worse than that is the lag that this game causes. I would have done so much better if there wasn't so much lag! Despite all of that, this is still a really great game.