Here is the full list of all 24 NASCAR 08 achievements worth 1,000 gamerscore.
Earned all Driver Badges.
Drove 5,000 Total Miles.
Won a NEXTEL Cup in "The Chase" Mode.
Won a NEXTEL Cup in Season Mode using the NEXTEL Cup Series '07 Schedule.
Won a Championship in Season Mode using the Car of Tomorrow Series Full Schedule.
Completed all Toyota Challenges.
Completed a Custom Car for all racing series.
Completed a 100% Length Race in Race Now or Season Mode.
Completed all Contracts in "The Chase" Mode.
Completed all Licenses in "The Chase" Mode.
Earned Three Gold Medals in "The Chase" Mode.
Won a NASCAR National Series race.
Won a NASCAR Car of Tomorrow race.
Recorded a Lap in Toyota "Test and Tune" Mode.
Won a Craftsman Truck Series race.
Uploaded a Car Setup to EA Locker.
Won an Online Race.
Saved a Race Replay.
Completed a Driver Badge.
Earned a Contract in "The Chase" Mode.
Earned a License in "The Chase" Mode.
Saved a Craftsman Tools Car Setup at any Track.
Won a Medal in "The Chase" Mode.
Reach 100% Game Progress.