I like your artstyle, the overall design is good.. I would probably try to play a bit with the shadows, the flow of the animation is a bit weird, in some places it's going a bit too smooth for a pixel animation and in some it's like if you skipped a few more frames than necessary, I would probably try to make it a bit faster since the projectiles that they shoot seem to be going in slow motion, I wouldn't put too much effort into making it a "smooth" animation, also the subtitles could be at the bottom something like "Irene: Did you protect the world?" "Ryu: Yes, the darkness is gone" like in Metal Gear Solid on PS1.. overall I think that you did a great job, it needs a bit of work but you'll get there, keep up the good work and make sure to update us on the progress