The Japan Expansion Add-on for Ticket to Ride has 6 achievements.
In Japan, complete 25 Tickets that enter the Tokyo subway
In Japan, connect Kokura to Hakodate using any combination of regular and bullet train routes.
In Japan, run out of personal trains before running out of bullet trains.
In Japan, build no Bullet Train routes and still win the game.
In Japan, in a 2-player game, have your Ticket completed by an opponent building a Bullet Train route.
In Japan, win the 25-point Bullet Train Bonus in a 5-player game.