Coursework - film name

I'm thinking of calling my film 'Sisyphus' as in Greek mythology he was a King punished by having to push a boulder up a hill repeatedly for eternity. He would manage to get it almost to the top only for it to roll down again and have to repeat the process. Therefore, I think that the idea of being trapped in a room and escaping only to have to do it again will link to that idea, however the name is obscure enough that many people might not pick up on the reference, although for those that do it will act as foreshadowing.