In order to get this achievement you have to wait until the tournament option is available in the head to head seasons....Once you are able to play a tournament just play against a friend and have them quit out until the final game then actually play the last final game and the achievement will be yours....I'm not to sure how often they post tournaments but if you really want the achievement I would suggest checking head to head seasons daily....I'm assuming they will stop posting tournaments if the servers become very low.