Your colors are pretty rough, it seems like you don't know whether or not it should be vibrant or moody sort of color tones, so it creates a confusing sort of atmosphere and environment. Also the only exceptionally well animated sequence was during the robot fight, besides that a lot of the perspective gets messed up and the character has no real weight. Also, you like, tweened some shit at the end when he runs over to the chest, c'mon man, that looked awful. Your character design was a bit cluttered and could have once again been colored in a more appropriate way, it seems like all of his colors don't necessarily fit his character. The song was pretty good, but no sound effects really killed it. Also i know you've been working on this for several months now, but yeah, hopefully your next thing will look better. take some time to practice animation and shit before hopping into your next project.