Full list of all 12 Jeremy McGrath's Offroad achievements worth 200 gamerscore. It takes around 8-10 hours to unlock all of the achievements on Xbox 360.
Sportsman Career Complete
Win 3 Races
Time Trials
Win First Race
Complete the ProLite Career Events.
Play the game for 1 hour.
Complete the Pro Buggy Career Events.
Complete the Rally Class Career Events.
Drive 100 miles total.
Finish 10 races.
Drive 1000 miles total.
Complete all events in Career Mode.