I'll give you some credit
I have seen far worse on here. For your first movie, it wasn't that bad. Next time though, you should really consider trying some animation instead of simply sliding some sprites around on a screen. I know it was your first movie so you are just figuring out how to do it. Also the machine gun noise was a little repetative. Get some different weapon sounds so you don't have the same sound over and over. It gets very annoying. good luck in your future movies.