Full list of all 37 Gas Guzzlers Extreme achievements worth 1,000 gamerscore. It takes around 25-30 hours to unlock all of the achievements on Xbox One.
Kill 10 opponents with any type of grenade.
Complete the second tournament.
Pick up 2 large money on-track packages in a single racing event.
Kill the opponent with a land mine in any game mode.
Complete the first tournament.
Kill 100 opponents in total.
Kill 10 opponents with any type of rocket launcher.
Die 6+ times in a single race.
Smash 10 opponents in any game event.
Commit suicide in any game mode.
Kill 10 opponents with a minigun.
Run over 100 animals in any game mode.
Kill 25 opponents in total.
Run over 50 animals in any game mode.
Kill 10 opponents with a shotgun.
Run over 20 animals in any game mode.
Kill three opponents in one race in any game mode.
Survive the fifth wave of zombies in Defend the base or Survivor game modes.
Complete a single race in any racing game mode without being damaged.
Survive the second wave of zombies in Defend the base or Survivor game modes.
Collect 10000 points by repairing the base.
Finish any race without picking up a health pack.
Survive the ninth wave of zombies in Defend the base or Survivor game modes.
Complete all game tournaments.
Win a battle race without firing a single shot.
Kill at least 1000 fat human zombies.
Survive the eighth wave of zombies in Defend the base or Survivor game modes.
Survive the seventh wave of zombies in Defend the base or Survivor game modes.
Kill 10 opponents with a railgun.
Survive the third wave of zombies in Defend the base or Survivor game modes.
Kill at least 500 trolls.
Survive the first wave of zombies in Defend the base or Survivor game modes.
Survive the tenth wave of zombies in Defend the base or Survivor game modes.
Survive the fourth wave of zombies in Defend the base or Survivor game modes.
Kill at least 800 hyenas.
Kill at least 15000 human zombies.
Survive the sixth wave of zombies in Defend the base or Survivor game modes.