Here is the full list of all 47 Project CARS 2 achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Completed a Championship in every Motorsport discipline within Career
Taken a photo in photo mode
Earned 50 Accolades
Won the Indy 500, Le Mans 24 Hours and Azure Circuit Grand Prix
Drove a clean lap around the Nordschleife in the snow, in less than 8 minutes
Won all Factory Drive events for 3 manufacturers
Completed the Factory Drives set of events for a single manufacturer
Won two different Tier 1 Motorsports
Finished on the podium 50 times in a single drivers Career
Earned four Lifetime Goals
Saved a car setup received from a friend
Used the Director mode for a full race
Finished 1st in an online race over 5 laps without making contact
Became an Indycar Champion
Completed the Zero to Hero lifetime goal (start in Tier 6 and go on to win a Tier 1 Championship)
Completed 10 Career Invitational Events
Completed your first online race
Won a full distance (200 Laps) Indy 500 race
Drove a clean lap around Fuji in Storm conditions, in a time less than 2 minutes
Completed an event in a Mercedes car at the Mercedes-Benz Driving Events Ice Track 2
Drove a Porsche 911 GT1-98 at 24 Hours of Le Mans Circuit for 24 minutes at 60x time progression.
Completed a race around a single circuit in all 4 seasons
Successfully completed a Rallycross season
Won three Championships in three different Motorsport disciplines
Became a Brand Advocate for a manufacturer
Earned Affinity with two manufacturers
Completed a successful pit stop with manual control
Downloaded another players setup from within Time Trial.
Joined an in-progress online race as a spectator
Did a Rallycross jump longer than 20 metres
Created a pit strategy and then used it when coming into the pits
Raced for 4 laps in the Lamborghini Veneno around Red Bull Ring GP
Used 3 different custom car setups for a single car
Drove 4 Ferrari cars, around Imola
Earned your first Career Accolade
Won your first Championship.
Completed the first season
Unlocked your first Career Invitational Event
Used the Race Engineer in Tuning Setup and made changes based off their recommendation.
Created a new driver in Career and signed your first contract
Earned your Rookie License
Earned all other achievements
Earned your Amateur License
Earned your Pro-Am License
Earned your Pro License
Earned your Veteran License
Earnt a B Online Reputation Safety Grade.