To unlock Xbox Live GamerScore points, complete the following Achievements.

Achievement	How to unlock
Air Miles ( 15 points )	You have won a race in every location.
Assistance is Futile ( 20 points )	You won a race without the use of any Driver Assists.
Battered Battersea ( 50 points )	You completed 100% of the Battersea Compound Missions.
Burnt Rubber ( 30 points )	You completed 75% of the Battersea Compound Missions.
California Dreams ( 20 points )	You earned yourself a podium finish at the X Games Tournament.
Call me Ace! ( 15 points )	You have completed a sensational performance in a Gymkhana Championship event.
Can't Touch This! ( 10 points )	You have survived a round of Outbreak without being infected (Pro Tour & Jam Session).
Cheeze It! ( 10 points )	You evaded the cats, won the game and earned the fans.
Cool Running ( 10 points )	You have beaten the bobsleigh in the DC Bobsleigh Challenge.
Crash Proof ( 10 points )	You used a flashback to take you to victory after facing defeat.
DC Challenger ( 30 points )	You have completed all of the DC Challenges.
DC Gold ( 10 points )	You earned all gold medals in the DC Challenges.
DC Silver ( 10 points )	You earned all silver medals in the DC Challenges.
Donut Addict ( 20 points )	You completed 50% of the Battersea Compound Missions.
Driven ( 20 points )	You have won DiRT Tour races using vehicles from every discipline.
Driving School ( 10 points )	You completed all of the Gymkhana tutorials.
Eat my DiRT! ( 50 points )	You have unlocked Driver Rep level 30.
Flag Stealer ( 10 points )	You stole the flag from the opposing team 5 times in a game of Transporter (Pro Tour).
From DiRT to Glory ( 50 points )	You have achieved first place finishes in all DiRT Tour Events.
Gym-Carnage ( 20 points )	You scored 500,000 points in a Gymkhana Event.
Gymkhana Aficionado ( 30 points )	You completed all Gymkhana Championships in the DiRT Tour.
Honorable Driver ( 10 points )	You competed via Xbox LIVE and earned a 'Cautious' rating.
Hooning Around ( 10 points )	You completed 25% of the Battersea Compound Missions.
Into the DiRT ( 10 points )	You have completed your first DiRT Tour race.
Join the Party ( 20 points )	You won a game in every party mode.
Kick Off the Training Wheels! ( 20 points )	You have achieved a podium finish in the Gymkhana Academy.
King of the Road ( 10 points )	You have won an Xbox LIVE race in hardcore mode.
No-bot Wars ( 20 points )	You smashed every robot in a Smash Attack DC Challenge.
Pace Setter ( 15 points )	You have completed time trials using cars from each class of Rally.
Perfect Sprint ( 20 points )	You gave a flawless performance in a Gymkhana Sprint DC Challenge.
Platinum Performance ( 20 points )	You earned all platinum medals in the DC Challenges.
Rally Evolution ( 10 points )	You have experienced key vehicles from Rally history and triumphed.
Reputation Boost ( 10 points )	You have completed 5 bonus Race Objectives.
Rising Talent ( 10 points )	You have unlocked Driver Rep level 10.
Road Trip ( 10 points )	You shared the experience of the Battersea Compound with your friends.
Self Preservation Society ( 10 points )	You won a race using the Mini Cooper without receiving any damage.
Shake and Bake ( 30 points )	You have unlocked Driver Rep level 20.
Showcase Drifter ( 20 points )	You have drifted past 25,000 points in a Drift Showcase DC Challenge.
Steer Hunter ( 10 points )	You have completed a game of Invasion without any negative points (Pro Tour).
Sub Zero Hero ( 20 points )	You earned yourself a podium finish Winter X Games Tournament.
Super Star ( 30 points )	You earned yourself enough fans to be considered a 'Superstar'.
SuperSeries Champion ( 100 points )	You won the DC SuperSeries Championship.
Taking the Trophy ( 20 points )	You have won 10 Xbox LIVE games.
Teacher's Pet ( 20 points )	You earned a platinum medal in each one of the Gymkhana tutorials.
The Extra Mile ( 20 points )	You have completed 25 bonus Race Objectives.
The Professional ( 10 points )	You completed your first Xbox LIVE Pro Tour Race.
The Real Thing ( 10 points )	You have experienced the thrill of Rally first hand and beat your competitors.
The Road Ahead ( 15 points )	You have completed 25 Xbox LIVE games.
Today's Forecast is...Victory! ( 20 points )	You have earned victories in all weather conditions.
World Renowned ( 20 points )	You have achieved first place finishes and passed the DC Challenge in a World Tour event.