Here is the full list of all 50 RIDE achievements.
Complete a race in Split Screen game mode
Reach a total of 50 bikes in your collection
Pull a continous wheelie for 8 seconds in any game mode
Win a gold medal in a Endurance event of the World Tour
Reach a total of 25 bikes in your collection
Win a Gold medal in each Elite Trophy of the World Tour
Reach the 1st position of the Ranking of the World Tour
Reach a total of 20 bikes in your collection
Reach the 10th position of the Ranking of the World Tour
Buy an Energica bike or a Lightning bike
Reach the 25th position of the Ranking of the World Tour
Reach the 50th position of the Ranking of the World Tour
Reach a total of 15 bikes in your collection
Buy a Bimota bike
Reach a balance of 100,000 credits
Win a gold medal in a Team Race event of the World Tour
Reach the 100th position of the Ranking of the World Tour
Win a Bronze medal in 4 different Elite Trophies of the World Tour
Buy an EBR Bike
Reach a total of 10 bikes in your collection
Pull a stoppie for 2 seconds in any game mode
Win a gold medal in a Drag Race event of the World Tour
Change the title of your rider
Reach the 200th position of the Ranking of the World Tour
Buy an Aprilia bike
Buy a KTM bike
Complete 20 online races
Complete an Online Championship
Complete your first online race
Reach 280 Km/h (174 mph) in any game mode
Complete a valid lap in Time Trial game mode
Buy a Honda bike
Enter the Free Camera menu from the pause of any race
Enroll one of your friends in the Motoclub
Win a gold medal in a Track Day event of the World Tour
Buy a Suzuki bike
Reach a total of 5 bikes in your collection
Buy a Yamaha bike
Buy a BMW bike
Buy a Kawasaki bike
Buy a Ducati bike
Win a gold medal in a Time Attack event of the World Tour
Buy a Triumph bike
Change one of the gears of your rider
Buy a MV Agusta bike
Reach the 300th position of the Ranking of the World Tour
Use a Rewind in any game mode
Enter the bike settings menu
Buy a new component for one of your bike
Enter the World Tour game mode