Accomplish the below tasks to get Gamerscore points:
Backgammon Baby: Win a game with a backgammon.
Backgammon Beginner: Win a total of 10 games.
Backgammon Veteran: Play a total of 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: Successfully complete 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.