It could use some polishing.
Overall this is very good work for a sprite movie. In several scenes in the beginning and toward the end as well, though, there's just way too much going on on screen to guide the viewer's eye toward where the action is supposed to be or to properly follow it. I'd strongly suggest using less colorful backgrounds to let the characters we're supposed to be seeing stand out, for a start, and adjusting the isometric angle you seem to favor to allow people to be silhouetted against a skyline would look a lot better. In a lot of these scenes you've also got a great many characters just standing around who don't appear to be contributing to the action at the moment, and it honestly left me frantically scanning to see just who I was supposed to be looking at. The scene in the end where the villain has someone up by the throat was especially problematic, just for how many characters you had standing more prominently in the foreground than him. Again, I think that may partly stem from your angle just being too high, which sort of focuses all characters equally instead of letting the eye recognize something too close like that as a foreground object. Adjusting the perspective and blurring it slightly could help with that. Your text is full of typos and goes by at an insane rate, so adjust that as well. Focus some of the more dramatic moments in close-ups to eliminate the unnecessary number of characters standing around cluttering the scene. Or, you know, just storyboard less cluttered scenes. The sharp resolution on the text box is also just slightly flow-breaking with the otherwise pixellated art. Finally, it's really apparent that you've harvested characters from games with rather different artistic styles and the SD3 sprites don't always mesh very well with the more realistically proportioned ones.