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