First, however, I need to know what this game is supposed to be about in theory. I'm very sorry, but I can't help you effectively develop a game that seems to be 10 seconds long with a simple monster chasing you.
What are you supposed to do in this game?
Also, you'll get a lot better at managing your time. I'm also working on the same thing, as I ran out of time for visuals and audio in my submission too.