Full list of all 38 GRID achievements worth 1,315 gamerscore. It takes around 200-300 hours to unlock all of the achievements in the base game on Xbox One.
The base game contains 29 achievements worth 1,000 Gamerscore, and there are 3 DLC packs containing 9 achievements worth 315 Gamerscore.
Gain entry to the GRID World Series
Win the 'Showdown: Ravenwest' Career Event
Win the 'Showdown: Hammerhead' Career Event
Win the 'Showdown: Vulpini Racing' Career Event
Win the 'Showdown: DisruptR' Career Event
Win the 'Showdown: Euro Rand' Career Event
Win the 'Showdown: Fernando Alonso' Career Event
Win the 'Showdown: Aurora Motorsport' Career Event
Reach player level 50
Purchase your first car
Purchase at least one car in each class
Reach Player Level 99
Earn a gold trophy in every Career Event
Drive a total distance equal to the circumference of the Earth
Complete every Career Event in the Invitational category
Customise your first livery
Complete every Career Event in the FA Racing category
Complete every Career Event in the GT category
Complete every Career Event in the Stock category
Complete every Career Event in the Touring category
Complete every Career Event in the Tuner category
Win a race by crossing the line backwards
Beat your first Nemesis
Win a race in a Ravenwest livery with Nathan McKane as your team mate
Win an Event with at least 3 other racers using a loan car
Beat your first Career Rival
Win an Event having finished the first round in last place
Finish a race with at least 3 other racers without taking any damage
Win your first Career Event
Complete the High Altitude Objective
Complete the Delta Time Objective
Complete the Fast for a Hatchback Objective
Complete the British Heritage Objective
Complete the Burning Rubber Objective
Complete the A Wheely Good Time Objective
Complete the Gone in a Flash Objective
Complete the Painting the Track red Objective
Complete the Flights to Catch Objective