Survive the first year

The first year and first winter will be the hardest part of each game; where your settlement is still small, resources are thin on the ground and you won't have had long to build stockpiles.

AS soon as the game starts, focus on preparing for the winter; its all about food and warmth. There should be berries and herds of animals nearby anyway - build a Forager Hut and Hunting Camp as soon as possible, and then focus on gathering wood.

Besides that you shouldn't need to worry about too much; just make sure there's a lot of food and timber stockpiled to get through the winter without too many people starving or freezing to death. Come the spring, the achievement will pop.