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 won every official Rally Raid T1 event in career mode.
Congratulations! You own 30 vehicles in career mode.
Congratulations! You have won every official Crossover event in career mode.
Congratulations! You have won every official Classic Rally event in career mode.
Congratulations! You have won every official National Rally event in career mode.
Congratulations! You have driven over 250 miles.
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 RWD Rally event in career mode.
Congratulations! You have won the Arai Japanese Alpine Rally.
Congratulations! You have won the Sparco Rally Espana.
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 have driven over 100 miles.
Congratulations! You are the European Rally Champion.
Congratulations! You have win the Rally Deutschland.
Congratulations! You have won the Brembo Rallye Italia.
Congratulations! You have won the BP Ultimate Rally UK.
Congratulations! You own 15 vehicles in career mode.
Congratulations! You have achieved the maximum number of points available for Tier 2.
Congratulations! You have won 20 races.
Congratulations! You have won 10 races.
Skilful driving! You have won a race using manual transmission.
Congratulations! You have won every official FWD Rally event in career mode.
Congratulations! You have won 5 races.
Congratulations! You have won 3 races in a row.
World beater! You have won your first ranked rally race on Xbox Live.
Hill Climb Champion! You have won your first ranked hill climb race on Xbox Live.
Clean as a whistle! You have completed a clean race during a ranked Xbox Live race!
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).
Drive a total of 500 miles in career mode.
Drive a total of 1000 miles in career mode.
Achieve maximum points up to the end of Tier 4 in career mode.
Achieve maximum points up to the end of Tier 6 in career mode.
Achieve maximum points up to the end of Tier 8 in career mode.
Achieve maximum points up to the end of Tier 11 in career mode.
Win all Rallycross events in career mode.
Win all CORR Super Buggy events in career mode.
Win all CORR Pro 4 Truck events in career mode.
Win all Hill Climb events in career mode.
Win the Champion of Champions event in career mode.
Own all of the vehicles in career mode.
Reach a speed of at least 135mph in a race in any game mode.
Race on every track (not including shakedown stages) in any game mode.
Win the International Rally Championship.
Win the Global Rally Championship.