Nice work! Animation was well done and the art was just as good! The starry sky made for a visually interesting set of backdrops without taking away from the animation itself!
The fights felt interesting and kept things fresh throughout. I particularly liked the bit where he jams the mini gun with his sword! The portal battle was also incredibly well done and managed to stand out in an already exceptional animation!
My only real criticism would be the sounds. While the sound effects used were appropriately picked and effectively added to the impact of hits and shots, it was the sounds that weren't there that took away from a few of the battles. Bodies and weapons hitting the floor as well as certain hits and movements would have had a lot more impact with some sort of accompanying sound. The lack of sounds as a whole in contrast with the loud movements of the protagonist made a few of the scenes feel slightly empty and lifeless. Although, this was only a minor detail that didn't take away from the animation in any major way.
All around great stuff!