Full list of all 30 MX vs. ATV Supercross achievements worth 1,000 gamerscore. It takes around 20-25 hours to unlock all of the achievements on Xbox 360.
Pull a stoppie over 25 feet
Visit the MotoClub Depot
Land a backflip
Lap an Opponent in a Race
Win 10 Holeshots
Pull off three unique stunts in a Race Event
Equip an upgrade part
Perform any airborne stunt and land successfully
Pull off 100 stunts
Finish a race without going off track
Wreck 50 times
Pull a wheelie over 150 feet
Finish 50 races on Xbox Live
Place 3rd or higher in the MX vs ATV East Career
Place 3rd or higher in the MX vs ATV West Career
Complete an Xbox Live match
Ride for over 100 miles in Free Ride
Place 1st in all tracks in Career
Place 1st in 25 Xbox Live matches
Place 1st in any Race on All-Time difficulty
Place 3rd or higher in the 450 Championship Career
Place 3rd or higher in the ATV Championship Career
Place 3rd or higher in the MX vs ATV Championship Career
Complete 25 Xbox Live matches
Place 1st in an Xbox Live match with 11 human opponents
Land a jump distance of 200 feet or greater
Place 3rd or higher in the 250 East Career
Place 3rd or higher in the 250 West Career
Place 3rd or higher in the ATV East Career
Place 3rd or higher in the ATV West Career