Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Barrel hater	Destroy 70 barrels.	100
Birder	Kill two birds.	100
Butcher III	Kill 600 zombies.	200
Butcher II	Kill 400 zombies.	200
Butcher IV	Kill 800 zombies.	200
Butcher I	Kill 200 zombies.	200
Butcher V	Kill 1000 zombies.	200
Car tuning	Paint a car.	100
First steps	Complete tutorial.	100
Full tank	Upgrade to max.	100
Machine gun	Buy a gun.	100
New wheels	Buy a new car.	100
Protected	Buy a push bar.	100
Racer	Accelerate to 100 km/h.	100
Trucker	Over 5000 meters.	100