To get this Achievement you will need to load up Goatz After Outbreak. Best mutators to use Casual and Hungry Coat, Anti-Gravity and Inventory.
You will need to locate the RV which is near the farm, the RV needs 3 Blue Barrels to make the Crystal.
First Barrel is located right next to the Van so pick it up using
and take it to the front and it should fit itself to the van.
Second Barrel is located in the loft of the barn right next to the RV, repeat first step
Third Barrel is located on top of the Mall so use Gravity to reach it and take it to the RV
Lick Zombies and place them in your inventory using
. Go near to one of the ice piles and empty your inventory of zombies before using it and shattering all the zombies.