theHunter: Call of the Wild

Story-related, just finish off all of the main story missions that are assigned to you by Jim Murray. These are some of the easiest missions in the game, as you don't have to shoot an animal and most of the missions are simply travelling to a location (most of the time they're marked out on the map already) and interacting with an object there. For completeness, here are the missions and some tips for completing them (hidden as spoilers):

- Welcome to Alaska - Visit the nearby Lookout Tower. Visit Logger's Point. Place lid on the bearproof trashcan. Investigate Firewood inside the outpost

- Quarantine - Travel to Woodman's Respite. Pick up backpack. Locate an infested tree. Mark the infested tree. Mark trees near the infested tree for investigation



- The Cost of Control - Travel to the muskeg. Collect first water sample. Collect second water sample. Collect droppings from 2 different species in the muskeg



- Picking Up, Dropping Off - Collect a hatchet from the marked outpost. Drop samples at the marked location



- Raise the Barrier - Travel to the bent tree near the train track. Chop the bent tree. Photograph the bridge while standing in the marked location



- A Place to Hang Your Hat - Go to Basri Memorial this time, you can't Fast Travel because it won't be available until this mission. Set up the temporary outpost. Retrieve Fuel. Refuel generator

- Flash Point - Retrieve the shovel and saplings. Head to planting site. Plant 3 saplings. Visit the tree that started the fire. Find tracks from 3 different animals



- Tech Support - Find radio equipment at the marked outpost. Fix radio relay at lookout tower. Investigate non-responsive collar. Drop off collar at the marked outpost



- A Mine of Information - Head to the Millerwood Mine Complex. Look for anything suspicious at Millerwood Complex. Investigate the structure with the broken lock



- Gabriella Baden: Bigfoot Hunter - Locate the camp. Put out fire. Investigate Baden's camp. Get to nearby lookout platform. Dismantle Gabriela [sic] Baden's camp



Once you finish the Gabriella Baden: Bigfoot Hunter, the achievement will unlock. Hope this helps, but please let me know if there's anything that is missing and I'll make the change