Full list of all 24 MotoGP '06 achievements worth 1,000 gamerscore. It takes around 25-30 hours to unlock all of the achievements on Xbox 360.
50 Challenges completed
All Challenges completed
Purchase all extreme bikes
Finish 500 races, online or offline
Finish 250 races, online or offline
Finish 50 races, online or offline
Win a Career mode Grand Prix season on Champion difficulty
Win a Career mode Grand Prix season on Legend difficulty
Win a Career mode Grand Prix season on Pro difficulty
Seed #1 achieved
Seed #10 achieved
Seed #25 achieved
Seed #50 achieved
Seed #75 achieved
Seed #90 achieved
Play a 'Stunt mode' game in any Multiplayer mode
Win any Extreme mode championship, at any difficulty
Win a Career mode Extreme 1000 season on Legend difficulty
Win a Career mode Extreme 1200 season on Champion difficulty
Win a Career mode Extreme 1200 season on Legend difficulty
Win a Career mode Extreme 1200 season on Pro difficulty
Win a Career mode Extreme 600 season on Legend difficulty
All rider credits awarded
Win a Career mode Grand Prix season on Rookie difficulty