It's probably kind of bad that I started with this one, but I'll definitely check out the others because I do think what you've got going here is very cool. It's nicely done over all, but I do have some notes for improvement. The biggest thing for me is while the song is cool and definitely fits the setting, I think it's production needs some serious work. I don't know if you are the one who made the song, but what stands out about it to me is the mixing and mastering of the track didn't receive enough attention. I don't know if you know what sidechaining is, or how to do it, but I think a big problem here lies within the sidechaining of the kick drum. It's either not sidechained to the bass, or it's sidechained too much and overpowers everything else. While it may have been a stylistic choice, and it does create a cool effect, it's too powerful, and that essentially muffles all of the other sounds in the track, which really diminishes it as a whole.
As far as the animation itself goes, one thing that I really love are the backgrounds, I think they are done very well, so good job on that. One thing I think could improve is the fluidity. Some parts, such as the gun shooting for example, are hard to follow because the animation is a bit clunky and jumpy. This could be fixed by using more keyframes at a higher FPS, or with more precise tweening.
I think your story is good, if not a bit generic. That's said without having scene the other parts though, so I might rescind that statement.
Over all, I like it quite a lot. I think you did very well. Keep up the good work, and I'd love to see more. I followed so I'll be expecting updates :) Good luck on future projects.