The only part of your fantasy that will be difficult to grant is the "...just before..." stipulation. The members of the gang (who will have no problem buttfucking and castrating you) will NOT want to risk their own lives by working you over as the train is hurtling towards them. If you could adjust your wish slightly, so that the sex and violence can be completed well ahead of your appointment with the engine, you may look forward to your dream coming true.