It needs a lot of work.
It really wasn't all that origional or skilled so I can't say much other than give you some pointers. You should probably work on a better storyline because that is what matters the most and you only have a lot of people running away from robots. If you got a main character who you followed the whole way through, then it might have worked. I'm guessing that it would take longer than your willing to spend on making the art good enough to carry the entire short through to get very good reviews. I can see you put a good amount of effort into it but it takes more than effort. Good luck with any other stuff you make and remember "Plot=Victory, Art=Double Bonus Points, and Sound=Bonus Points."