Here is the full list of all 49 DiRT achievements worth 1,000 gamerscore. It takes around 25-30 hours to unlock all of the achievements on Xbox 360.
Congratulations! You have driven over 1000 miles.
Congratulations! You own all of the vehicles in career mode.
Congratulations! You are the Global Rally Champion.
Congratulations! You are the International Rally Champion.
Congratulations! You are the European Rally Champion.
Congratulations! You own 30 vehicles in career mode.
Congratulations! You have driven over 500 miles.
Congratulations! You have achieved the maximum possible career points.
Congratulations! You have won every official Rallycross event in career mode.
Congratulations! You have won the Champion of Champions event in career mode.
Congratulations! You have won every official CORR Pro 4 Truck event in career mode.
Congratulations! You have won every official Hill Climb event in career mode.
World traveller! You have raced on all the tracks.
Congratulations! You have won every official Rally Raid T1 event in career mode.
Congratulations! You have won every official 4WD Rally event in career mode.
Congratulations! You have won the Shell Rally Australia.
Congratulations! You have won every official National Rally event in career mode.
Congratulations! You have achieved the maximum number of points available for Tier 8.
Congratulations! You have won every official Classic Rally event in career mode.
Congratulations! You have win the Rally Deutschland.
Congratulations! You have won every official CORR Super Buggy event in career mode.
Speed demon! You have reached a speed of 135mph.
Congratulations! You have won every official RWD Rally event in career mode.
Congratulations! You have won the Brembo Rallye Italia.
Congratulations! You have won the BP Ultimate Rally UK.
Congratulations! You have won every official Crossover event in career mode.
Congratulations! You have achieved the maximum number of points available for Tier 6.
Congratulations! You have won the Arai Japanese Alpine Rally.
Congratulations! You have driven over 100 miles.
Congratulations! You have driven over 250 miles.
Congratulations! You have achieved the maximum number of points available for Tier 2.
Congratulations! You have achieved the maximum number of points available for Tier 4.
Congratulations! You have won every official FWD Rally event in career mode.
Congratulations! You have won every official Rally Raid T4 Truck event in career mode.
Congratulations! You have won every official Hill Climb Big Rig event in career mode.
Congratulations! You own 15 vehicles in career mode.
Congratulations! You have won 10 races.
Congratulations! You have won 20 races.
Congratulations! You have won the Sparco Rally Espana.
Hill Climb Champion! You have won your first ranked hill climb race on Xbox Live.
Congratulations! You have won 3 races in a row.
Congratulations! You have won 5 races.
Clean as a whistle! You have completed a clean race during a ranked Xbox Live race!
World beater! You have won your first ranked rally race on Xbox Live.
Skilful driving! You have won a race using manual transmission.
Congratulations! You have raced a clean race.
Congratulations! You have achieved your first victory.
Congratulations! You have achieved your first podium finish.
Congratulations! You have jumped 20m (or equivalent feet).