Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock	Points
Car of Steel	Claim Steel Pass on three cars.	50
Do a Barrel Roll	Blow up 500 barrels.	50
Doing Your Job	Collect reward for completing ten quests.	25
Earn to Climb	Earn 100 000 coins.	50
Escape the Desert	Finish stage 4.	50
Gotta Collect 'Em All	Collect all hidden chests.	100
Halfway there	Finish stage 6.	100
Luxury	Earn 100 gems.	50
Never stop	Buy both fuel tank upgrades.	50
Roadkill	Kill 2000 zombies.	50
Survivalist	Complete all levels.	150
Unstoppable	Buy all upgrades on all cars.	200