Poorly animated.
Well, this is what I would expect from someone making his first flash. But apparently, you've been doing this for like three years or more.
The first thing you notice on the flash is how badly drawn and animated this is. The drawings are too plain. No real shading, shapes are terribly drawn, etc. Then, the animation. The characters just stand still, even while walking, using their hands to fight. By the way, the fighting scene was just ridiculous. The animation is not smooth, and who fights without even moving their hands and legs? And the colors used on the flash. Oh god they were awful. Terrible tones. You should look for smoother colors, not "hard" colors like that, as you never see such colors anywhere in the world.
Now, about that annoying "voice" I hear when the characters speak. Why even making a really annoying high pitched voice saying nothing at all? You should remove it. Instead, get some real voice acting. I've seen your voice acting work, and you should definitely not do it yourself.
Apart from the animation, the story is also terrible. Really. I see the genre is "Comedy - Original", but I didn't see any comedy in that flash, and it's probably not that original.
About you not taking criticism: this is newgrounds, you'll eventually take criticism (with such flashes, more like all the time. Oh, and criticism not always means bad comments on the work, there can also be good criticism, you should probably get to know your language a little bit more). Well, even outside newgrounds, you'd take criticism, work can never be perfect. Do you seriously only expect to get 10's and 5's out of this work? I don't think so. I'm not voting because I don't like your attitude, I'm voting on the quality of the flash. Maybe the fact that you've never been able to take criticism is why your animation hasn't improved for all the time you've been to newgrounds posting your flashes. If you don't like taking criticism, you should seek for another website, not newgrounds. This is not the place for you.
Do you really think your work is great? Take a second and try watching other flashes, some with real effort put into them, and you'll see you need to improve, and that your flash isn't the best on earth. So maybe you will start trying to actually put some effort on your flashes, try to make yourself better. But no, you're already too cool to do that.
If you do actually respond to this with a "Fuck You" or "Lol I don't take criticism", without even reading a little bit of this review and making a proper response, it really shows how immature you are.