Here is the full list of all 50 MotoGP19 achievements.
Obtain access to Qualifying 2 in Grand Prix, Championship or Career mode
Win a race at Spielberg in Grand Prix, Championship or Career mode
Win a race at Jerez in Grand Prix, Championship or Career mode
Complete a Free Practice Session in first place in Grand Prix, Championship or Career mode
Win a race at Losail in Grand Prix, Championship or Career mode
Win a race at Termas in Grand Prix, Championship or Career mode
Win a race at Austin in Grand Prix, Championship or Career mode
Win a race at Le Mans in Grand Prix, Championship or Career mode
Win a race at Mugello in Grand Prix, Championship or Career mode
Win a race at Catalunya (modern version) in Grand Prix, Championship or Career mode
Win a race at Assen in Grand Prix, Championship or Career mode
Win a race at Sachsenring in Grand Prix, Championship or Career mode
Win a race at Brno in Grand Prix, Championship or Career mode
Win a race at Silverstone in Grand Prix, Championship or Career mode
Win a race at Misano in Grand Prix, Championship or Career mode
Win a race at Aragon in Grand Prix, Championship or Career mode
Win a race at Buriram in Grand Prix, Championship or Career mode
Win a race at Motegi in Grand Prix, Championship or Career mode
Win a race at Phillip Island in Grand Prix, Championship or Career mode
Win a race at Sepang in Grand Prix, Championship or Career mode
Win a race at Valencia in Grand Prix, Championship or Career mode
Win a race at Catalunya (historic version) in Grand Prix or Championship mode
Win a race at Donington in Grand Prix or Championship mode
Win a race at Laguna Seca in Grand Prix or Championship mode
Complete 10 valid laps in Time Attack mode
Complete 20 valid laps in Time Attack mode
Win a Bronze medal in a "500cc Heroes" Historic Challenge
Win a Bronze medal in a "Modern Era" Historic Challenge
Win a Bronze medal in a "Dawn of the MotoGP™" Historic Challenge
Win a Bronze medal in a "Great Rivalries" Historic Challenge
Reach the Team Qualifying objective 10 times in Career mode
Reach the Team Qualifying objective 20 times in Career mode
Reach the Team Race objective 10 times in Career mode
Reach the Team Race objective 20 times in Career mode
Win a Red Bull MotoGP™ Rookies Cup Championship in Career mode
Complete your first online race
Complete 10 online races
Complete 20 online races
Win the Bronze medal in all "500cc Heroes" Historic Challenges
Win the Bronze medal in all "Modern Era" Historic Challenges
Win the Bronze medal in all "Dawn of the MotoGP™" Historic Challenges
Win the Bronze medal in all "Great Rivalries" Historic Challenges
Reach the Team Qualifying objective 30 times in Career mode
Win at least a Silver medal in all Historic Challenges in the basic game
Reach the Team Race objective 30 times in Career mode
Win a MotoGP™ Championship in Career mode
Win a Moto3™ Championship in Career mode
Win a Moto2™ Championship in Career mode
Win the Gold medal in all Historic Challenges in the basic game
Win a MotoGP™ Championship in Career Pro mode