not especially breathtaking...
(please dont mind any grammatical errors I made, English is not my native language)
Now I dont know how much experience you have with actual Flash animation, but it seems you have still quite some ways to go. To explain the low ratings:
Graphics: I personally tend to dislike any gradients used in flash, as they seem out of place mixed in with vectors. Furthermore, there is no variation in enemy hordes, apart from the flying robot and the big collosus like robot at the end. Animation (no offense) is horrible. You really ought to get some books on animation in general if you want to continue with this kind of thing, as the animation in this movie is very bland. Take for example the last part where she "climbs" up the robot, which is nothing but a static image moving up. I also agree with the previous review, there is too much repetition in the animation sequences you use and motion tweening complete characters is not exactly a good technique to make them credible.
Style: well, not paticularly breathtaking either. I dont dislike the whole style, but it doesnt offer anything new or tantalizing either. It just didnt have that wow feel.
Sound: Pretty good, it fitted well with this movie. The collosus soundtrack during the last battle was also pretty nice, even though completely different in style compared to the first track. If I were you, I would have taken something more like this first track.
Violence: Well, there was some... Nothing great though...
Interactivity/Humor: well, ignore those. I had to fill in something...
Overall: While it wasnt extremely bad, it still needs quite some improvement. You would do good to try something else besides motion tweening everything, but instead try animating it by hand for example. Well, hope it helps...