Complete the following achievements to unlock Xbox Live Gamerscore points.
Use the following trick if you become stuck on one of the Keystone tournaments. Check the scores after you finish the first game of five. Check if one of the top five scoring players are at your table (press RT to see the game standings). If so, copy the bets of that player. Chances are his luck will continue and you will gradually work your way to the top. You can play it safe and not bet on the long shots such as a trip, three 2's rolled, three 3's, etc. when the player bets on them.
While playing a game of Spinnerbox, press A to stop the spinners quicker. It does not change your chances of winning.
When playing Fortune's tower on 150-1500 you can place your bet down at the lowest number of 150, after the gate card is layed down, hit Left Bumpter to raise your bet to 1500. The amount of money you'll have put down will be 150, but the multiplier of the money you get back will be as if you put down 1500.