On the one hand, large bouncing breasts are sorta standard. On the other, these remind me of a lopsided propeller about to rip itself free. Maybe some slight movement between the two so they aren't swinging around as one solid mass. And slow down, checked my video twice to make sure it wasn't accidentally playing in fast forward.
Also could use a touch on the story. Random chick randomly beating up random mooks isn't really a story I can invest in. I understand is still development, but a bare bones idea at least gives me a framework.
In all, shows promise, but still lots of room to fail in.