Here is the full list of all 50 F1 2019 achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Reach Level 50 XP
Reach maximum sportsman rating
Accept a contract with Williams, Racing Point, Renault, Toro Rosso or Haas
Apply all vehicle upgrades from one department
Reach Level 25 XP
Win a 25% distance (or longer) race against Ultimate AI opponents
Achieve a Gold skill rating
Achieve a safety rating of A in multiplayer mode
Obtain a livery for your multiplayer car
Get promoted to first driver
Finish ahead of Devon and Lukas by the end of an F1 Season
Spectate an online race
Register a time trial entry on every track
Win the F1 Drivers' Championship
Win the F1 Constuctors' Championship
Make an adjustment within photo mode
Set the fastest time in all 3 practice sessions, take pole position and win the Grand Prix
Complete the "2018 FORMULA 2 WORLD CHAMPIONSHIP" championship event
Set a favourite trophy
Complete 10 races online
Complete a Featured Event
Join a league
Complete a clean race
Win a 25% distance (or longer) F1 race at Monaco (any difficulty)
Reach Level 10 XP
Complete a race using the Ferrari F2004 at Monza
Play a captured highlight
Complete an F1 race with all driving assists turned off
Win a race whilst using manual transmission
Get pole position
Accept a contract with Red Bull, Ferrari or Mercedes
Get on the F1 podium for the first time
Tell Jeff to be quiet
Complete an F1 Time Trial in wet conditions.
Reach Level 5 XP
Read information on a car in the showroom
Complete the first weekend of an F1 season.
Finish ahead of Lukas or Devon in an F1 race
Complete an F1 practice programme in Career Mode
Accept a contract with McLaren or Alfa Romeo
Complete the F2 feeder series and start to pursue a move to F1
Activate a Flashback during a race
Complete your first race with an F2 car in career mode
Change your driver's appearance
Choose a player badge
Activate DRS perfectly on all zones of any track
Complete a Weekly Grand Prix
Complete all events in a Weekly Grand Prix
Win a league medal
Reach maximum showman rating