ACHIEVEMENT - HOW TO UNLOCK Backgammon Baby - Win a game with a backgammon. Backgammon Beginner - Win 10 games. Backgammon Veteran - Play 100 games. Bar Baron - Get four of your opponents checkers on the bar at once. Double Take - Win a game with a doubling cube bonus. Gammon Grabber - Win a game with a gammon. Mega Streaker - Win 25 consecutive games. Mini Streaker - Win 10 consecutive games. Online Gammoner - Beat 10 games on Xbox Live. Pied Pipper - Win a game by 50 pips. Pip Master - Win a total of 25 games. Prime Pied Piper - Win a game by 75 pips.