Dear Sherklov
Animation could use some work, it wasn't smooth but you can work your way around that if you can. Anyways this was interesting but its not really much of a preview, you could've made it into an interesting trailer (even though that would be tedious, but it would get your audienced hyped for it)
A trailer where you introduce the character, then his role and mission, then the antagonist and stuff pretty much like the intro of Madness combat 5. Then you'll preview shots of the action scenes, scene by scene, in random but coherently and associated with a kick ass soundtrack to beat.
But I have to indicate some sfx are missing, as well as music. Dunno why you removed the looped music if this is apparently a preview. Good luck with the animation and kudos for making one.
Regards from a struggling youtuber
Etriuswimbleton