ur character movment is smooth but
ur effects are sorely lacking, when you draw one energy trail and use a tween to make it stretch and fade it looks pretty terrible draw the fading of the effect in fbf, try not to use gradient they clash with the feel of the flash. when they were high in the clouds and the one shot the other with lightning, that was a good effect. also. ur nuclear explosion looked like an expanding mushroom growing behind the city while the city stayed intact
(me is too lazy for punctuation)
all of these things detract from the overall effect!