On this I see you put a lot of effort into this but there is a few things I would like to tell you.
the break at 0:24 was very long, kinda broke the flow a bit.
The animation itself looks good but it seemed to move very slow. I would say use 30 FPS for animation like this if you aren't already. Also maybe even add in some sound effects to make it seem more epic (this is just a personal preference)
But the models look good, the art is great and the over all video is very well done.
Keep it up :3