Here is the full list of all 25 Grand Prix Rock 'N Racing achievements worth 1,000 gamerscore.
You have played a race with four friends
Japan GP Time Trial completed in less than 03:02:00
China GP Time Trial completed in less than 03:26:00
Brasil GP Time Trial completed in less than 02:53:00
Spain GP Time Trial completed in less than 03:14:00
Germany GP Time Trial completed in less than 02:38:00
UK GP Time Trial completed in less than 02:48:00
France GP Time Trial completed in less than 02:09:00
Italy GP Time Trial completed in less than 02:14:00
Canada GP Time Trial completed in less than 02:11:00
USA GP Time Trial completed in less than 01:22:00
Spain GP 's Champion!
UK GP 's Champion!
Set Box completed!
France GP 's Champion!
Italy GP 's Champion!
Canada GP 's Champion!
USA GP 's Champion!
Reach more than 380 Km/h
Champion!
Champion in the Season 1!
Japan GP 's Champion!
China GP 's Champion!
Brasil GP 's Champion!
Germany GP 's Champion!