At the place where you can ride your motor-bike inbetween the 2 bridges start from the end opposit from the stairs that lead to the tunnel.(u have to be on a motor-bike) go as fast as u can adown inbetween the bridges avoiding thelights and the ppl(u need to be as fast as possible) because if u hit somthing even a tiny rock that has any effect on ur speed, it wont work, so u must restart.then, just before u touch the stairs that leqad into the tunnel slightly lift ur front wheel. so u head is about to hit the wall and nothing else but ur head hits the wall. then when ur head hits the wall u must have died because if u dont die when u hit the wall ur head wont come off. but if u do die u will see there is nothing above ur shoulders and ur head is nowhere to be found.