I agree... her movements are great! I really enjoy the variety you get just moving around.. you can swim slowly, quickly, put on a quick burst of speed, cling to a wall to push off quickly, and sometimes spin when changing directions! But it's not completely formulaic.. I love that I can't consistently get Naija to do that little spin thing she does sometimes. Beautiful!!
The only minor criticism I have is the way she shoots the energy beams. The hand motion is just fine, but I don't like the way she just stares off into space when she's shooting. I don't know how much extra programming this would have taken, but I would have thought it amazing if her face followed the cursor or something. But, this is very minor, as the energy blasts and explosions (the really important part of the energy form!) look fantastic!