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