Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
Alpha and Omega (10 points)	Reach driver level 15.
Encore (20 points)	Achieve a 3-star rating in all "High Stakes" and "Balance of Forces" races.
Keep on sharing (20 points)	Win 10 multiplayer races on tracks from "High Stakes" and "Balance of Forces" events.