Here is the full list of all 49 F1 2014 achievements worth 1,000 gamerscore. It takes around 30-35 hours to unlock all of the achievements on Xbox 360.
You have completed 50 races online.
You earned every Gold medal in Scenario Mode.
You earned every Silver medal in Scenario Mode.
You have set clean lap times at 10 different circuits in Time Trial.
You have set a clean lap time in Time Trial.
You set a time in a Time Attack scenario.
You earned every Bronze medal in the easy set in Scenario Mode.
You earned every Bronze medal in the very easy set in Scenario Mode.
You have earned a medal in Scenario Mode.
You have completed a race in Split Screen.
You have won the Drivers' or Constructors Championship in Co-op.
You have won the Constructors' Championship in Career.
You completed a Short Season in Career.
You won the Drivers' World Championship in a Short Season Career.
You qualified last, but finished first in Career.
You set the fastest lap time in every session of a long race weekend in Career.
You have performed a Mid-Session Save.
You won your first race in Career.
You completed your first race in Career.
You completed your first 25%+ distance race.
You have taken pole position in Career.
You completed Season Challenge.
You raced for five different teams in Season Challenge in a single season.
You have won the Drivers' Championship in Season Challenge.
You have beaten four rivals in one season in Season Challenge.
You have completed 25 races online.
You have beaten your first rival in Season Challenge.
You passed all of your objectives over a race weekend in Season Challenge.
You won your first race in Season Challenge.
You completed your first race in Season Challenge.
You have taken pole position in One-Shot Qualifying.
You have set a valid lap time in One-Shot Qualifying.
You have successfully completed the Evaluation Test.
You have completed your first race online.
You won a race with all driver assists disabled.
You finished a race using a custom car setup.
You used a Flashback.
Be recommended for the hardest preset Difficulty in the Evaluation Test.
Finish a race at every circuit.
Stay with the same team through the whole season in Season Challenge.
Return to your starting team in Season Challenge.
Win the Drivers' Championship in Season Challenge on hard difficulty.
Move to another team mid-season in a long Career.
Complete a Medium Season in Career.
Win the Drivers’ World Championship in a Medium Season Career.
Complete a Full Season in Career.
Win the Drivers’ World Championship in a Full Season Career.
Set a time in all of the Time Attack scenarios.
Earn a Gold medal in all of the Time Attack scenarios.