Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

Grinner (10 points): Winners are these!.
Hard Charger (30 points): Start in last position and win an A Feature.
Trio (20 points): Place first in 3 events in a row.
Half-Dozen (30 points): Place first in 6 events in a row.
Skin Of Your Teeth (25 points): Finish an A Feature with two or more parts of your vehicle severely damaged.
Cross Country (30 points): Complete a race at each Sprint Car track in single player.
Gonzalez (15 points): Set a lap record in single player.
1.21 Jigawatts?! (15 points): Hit a top speed greater than 88MPH in single player.
Handle With Care (15 points): Finish an A-Feature in Arcade raceday with damage turned on.
Running Blind (20 points): Finish a race without using a Tear-Off in single player.
20/20 Vision (20 points): Use 40 Tear-Offs in single player.
Baby Steps (10 points): Complete Volusia's first event.
Cashing In (15 points): Get your first payout from a sponsor.
Local Star (30 points): Place first in all Career events on a single track.
Racer X (20 points): Get a Large Trophy in a Speed Challenge event.
Dodgem Car (20 points): Get a Large Trophy in an Accuracy Challenge event.
Time Bandit (20 points): Get a Large Trophy in a Time Challenge event.
On Your Way (30 points): Earn 2,500 points in Career mode.
Big Earner (45 points): Earn 5,000 points in Career mode.
Ka-Ching! (15 points): Purchase your first upgrade component.
Fully Tricked (35 points): Deck out your car with the best upgrade components.
Volusia Victor (15 points): Complete all events at Volusia Speedway Park.
I-55 Conqueror (15 points): Complete all events at I-55.
Knoxville Master (15 points): Complete all events at Knoxville Raceway.
Dodge City Slicker (15 points): Complete all events at Dodge City Raceway Park.
Cedar Lake Champ (15 points): Complete all events at Cedar Lake Speedway.
Huset's Hero (20 points): Complete all events at Huset's Speedway.
Eldora Expert (20 points): Complete all events at Eldora Speedway.
Lernerville Legend (20 points): Complete all events at Lernerville Speedway.
Williams Winner (20 points): Complete all events at Williams Grove.
Skagit Success (20 points): Complete all events at Skagit Speedway.
Silver Dollar Jackpot (30 points): Complete all events at Silver Dollar Speedway.
Down and Dirty (30 points): Complete all events at The Dirt Track at Charlotte.
Veteran (90 points): Complete Career Mode.
Come On Down! (5 points): Host an Xbox LIVE game.
Just Visiting (10 points): Join someone else's Xbox LIVE multiplayer game.
Red Hot (15 points): Be 2 Hot Spots ahead of your opponents in an Xbox LIVE Hot Spot game.
On Fire! (20 points): Deliver 10 Hot Spots in Xbox LIVE Hot Spot Delivery games.
Tag Sale (20 points): Rack up 30 Tags in Xbox LIVE Tag games.
Discombombulated (20 points): Win 10 Xbox LIVE Bomb Tag Matches.
Home Run! (15 points): Finish a Xbox LIVE Bomb Tag game without getting the bomb.
The Need For Speed (20 points): Hit 5 Hot Spots in a row in a Xbox LIVE Hot Spot game.
Fender Bender (15 points): Collide with an opponent in mid-air in an Xbox LIVE game.
See Ya! (15 points): Give the Bomb to an opponent with 2 seconds or less on the clock in an Xbox LIVE Bomb Tag game.
Airtime (20 points): Fly through the air for 3 seconds in an Xbox LIVE game.
Mud Runner (10 points): Win a Xbox LIVE match.
Mud Eater (20 points): Win 10 Xbox LIVE matches.