Hi there, i was wondering if anyone could help me find out the title of a martial art film i watched a few years ago. A friend of mine back then showed me a bit of a film where it involved ONE martial artist working his way up a tower or building with different levels, each level containing a fighter better than the last. The main part i remember was one fighter had some kind of sand spread across the floor, which made the fight scene between the two of them very good, they were kind of sliding around fighting on it. I don't really remember much more because i only saw a little bit of the film. If you know of such a film i would be very great full if you could tell me the title.