Compared to the first part, this is horrible
Your first part actually had atmosphere, a background, and the characters actually acted like they did on the games. It wasn't the greatest but it was a good effort. And I'll proudly admit you had a very cool looking loader.
This one pales greatly in comparison. In a fightscene, no one just wants to see heads reacting to the blades; they want to see the bodies fight. It just seemed like such a generic fight.
Than there is Sephiroth. Doesn't need to look like a badass all the time but having him making goofy faces like Vash the Stampede is just terrible.
I think the problem that you have is that you don't have a good concept of the human anatomy. Sure you can draw heads, but animation cannot rely solely on facial expressions alone.
My suggestion is that the next time you create a flash, focus more on drawing simpler animations. For instance, Cloud's running animation was terrible. Work on how to walk before you try running.
Fighting animations are difficult. The amount of flash tricks involved are insane, especially if its a non stick movie.
Props though for finishing your movie. Most people would've just tossed their work when feeling bored. Although if you think the flash was half assed, you should expect people to give assy comments.
Anyways, I suggest you look under my profile and under favorite animations. I've collected alot of tutorials that may help you.
the best ones are the
-drawing hands/heads for idiots
-Point Perspective Tutorial
-Walking Cycle one
-Particle effect tutorial that is surprisingly easy and should help you on your magic effects next time.
Good Luck