Good overall review however I would like to answer some of your points.
Art - 3/5: You said the art is not bad and not great at the same time which I understand. Though I think the reason you thought the art was not that good was because of my main use of the line/pencil tool. If I had used the brush tool then I think the art would be alot more appealing. The thing is, as I use a mouse, using the brush tool would be incredibly difficult and if not done right can be very time consuming. As I can draw in real-life aswell I intend in ordering a brand new drawing tablet so it can help speed up my drawing times while looking neat aswell.
As with the character proportions and anatomy, they are heavily based off the anatomy of dragonball characters. Which I now understand many many people dislike, especially in a place like this. I will not make that mistake again.
Animation - 4/5: Thanks for giving me the benefit of doubt, yes the tweening animation did look awkward at times. But what you have to remember, also looking back at my previous work is that I'm no professional well-paid animator. Just some broke cyber security ex-student lol but continuing on your point, I could make use of frame by frame animation though again it requires too much time to do. Without a tablet I'm gonna have to restrict myself into using a mouse and boring tweens.
Sound - 2/5: Here is where I totally agree with you here. The sounds I used were way too loud, I made that mistake again on my part. Previously I've mentioned, weeks prior before releasing this I had noticed that the sounds can be considerably loud at certain points. I was like shit wtf can I do? half the flash contained sound waves that could make my ears bleed. Then I said forget it, I've already taken too long to release this so I just went on to finish it.
You mention certain sounds being grainy which I slightly disagree in. If I had known most of the sounds were scratchy lol this flash would be no where near newgrounds. I think it's only at the intro where you can hear the first soundtrack scratch a bit, but that's the main problem I have seen so far.
Overall thanks for the in-depth review, all I can do is learn and better myself as a animator. I'm considering changing my style in future animations, so I can bring a wider audience of viewers to enjoy my projects.