Walkthrough for Civilization At Any Price of Red Dead Redemption.
1. Go to D mark in the Map to meet Captain Vinecnte De Santa at the Escalera.
2. Mount up your horse and follow De Santa.
3. Move in front of the train and protect it from enemies in it's path.
4. When the train reaches it's destination, go to the Yellow Dot.
5. Mount up a horse and kill everyone on the moving train.
6. After killing enemies on the train, go in front of it and jump to train's control wagon.