this is pretty good, you seem to have most things down. Your focus on movement is pretty sweet, especially combined with your relatively simple but flashy ideas, and the hits do their job just fine. The only things that i noticed that could maybe be fixed is the small tweaks. For example, at around frame 300 you bent your lumbar left in order to straighten your body and it was pretty noticeable because you weren't moving many other bodyparts while doing it, so it draws attention. Perhaps you could have done that a bit earlier while you were still moving faster to mask it, or maybe tried to make the movement slower so it's not so sudden and noticeable. When i want to make a particular movement smoother i usually relax the joint after 1 or 2 frames of contracting/extending, it will go to the position i want and it won't look so sudden.
watched some of the other replays aswell, you have some pretty neat stuff.
