To unlock this achievement, you travel away from the starting location of Glendale in Last Stand 2.
Travel to other locations is unlocked by gathering supplies. Supplies can be gathered by searching buildings during the day. Once you have enough supplies to travel, you will see the option to do so on the left side of the screen when you are prompted to search for weapons/survivors.
To get this achievement to pop, all you have to do is travel to another location when the option becomes available!