first start a new game then pick the top right map with 1 star rating and starting funds of 1 billion. now u need to complete both railway projects and u need to do this by playing the markets do not build anything. best advice i can give for markets is buy less than 8 and sell above 15 keep saving your game so u can catch the best prices. u need to build these b4 u reach 10 bill the catch is the maglev project costs only a fraction under 10 bill so again u need 2 keep saving making sure not to go over 10 bill but yet still be able to build maglev project. once built u just need 2 play markets again to gain funds and also complete the bullet train project. make sure both projects are completed b4 u hit 10 bill also getting u bullet train and maglev train and top trader achievements . P.S. if u are a fraction short of money needed dont forget u can borrow a small amount from the bank to get the desired amount.