a movie this short with low quality shouldnt be posted in portal, more of dump grounds.
here are things i wanna point out:
1) tone down the movement, they all are going crazy bananas.
2) the movements are too choppy that it's hard to understand the fighting chronography, add ease in's and out's to prevent choppy movements. for example if you want your character to swing a bat you should charge it up then start moving it very slowly and progressively faster as the hand moves.
3) very very short to be placed in portal, if you wanna upload short movies make sure it's in all good quality
Other than that it's decent just be sure to think of the mistakes you did and try to learn from them.