So I've managed to scrape along to the It thing in chapter 5.3 on professional (~160 deaths!), but I cannot get through the crater maze and I don't see how I'm ever going to do it. Is it possible to run by him when he jumps down (always get killed doing that) or do I have to shoot him? I have very little ammo left and I thought I should save it for when I take him on after the maze. I even tried selling my rifle to buy a magnum, but that ammo didn't last for long.