The run towards the camera doesn't look too good. I think you should have made the resizing more exaggerated (like, make him go from small to big because he's running towards the camra). Having him step on the same level on the floor doesn't help either.
The run toward he camera had wobby arms that were confusing. I didn't like how there was no glare to the gun and only smoke to show that he fired.
The rest is great. Keep it up!
@Atomicapple, yea now that u say so the left arm does look wierd, I'll look into that. Also, I do believe i did put i muzzle flash in there if thats wat you mean by glare?