In order to gain the "The Life and Times of Raccoon Carter" trophy in Firewatch (EU), you must first reach Day 77. Please see my solutions for preceding days if you need help getting to this point. It's worth noting that the below trophy is very close by when going for this one, so it's worth doing both at once:
From your tower, head down the path behind to the cave. On the far side, follow the wires as per Day 2 until you see a sign stating Beartooth Point / Thorofare Fire Lookout (if you've gone for the Ol' Shoshone trophy first, just retrace your steps to the above sign). From here take a sharp right -- you should see an old outhouse. Beyond that is a half-collapsed cabin. Head down the stairs inside and interact with the stove to get your trophy.