This wasn't bad at all, I like your attention to details by using background objects as well as parallax. Was there a reason for viewers need to click dialogue box in the begging then the rest was streamline?
You have a great style of choreographing, keep it up.
1. V-cam needs a bit of work, you letting your bleeding show.
2. Get the full sprite sheet of the sentinel, you'll have plenty to work with than using limited versions. They look cool, but not much to work with.
3. Good use of comic pages for flash back, a scene like that is best to keep short.
Other than that, smooth animation. Keep the sprites alive.