Sashamorning has already made a wonderful guide that helped me get the achievement and you should refer to her guide as a reference for the other areas.
Now with an Navigation update and with a new area Bleak Inlet added to to game I figured I’d add my own guide covering the new content and tips for making this easier and faster to get.
For example now there are Polaroid pictures added to the game with 1 being in every area. If you find one and got to map the area that it tells you to go too you’ll survey a large portion of the map and can get many places marked at once, so keep your eyes peeled!
Bleak Inlet has 2 access points; through a cave system in at the bottom of the Forlorn Muskeg area, and the other is found by repelling the a cliff in the Ravine area.
You can get to the Ravine by following the train tracks in Mystery Lake out by the Dam, or by following the train tracks out from Coastal Highway. The climbing spot is near the fallen tree bridge. If the rope doesn’t spawn already attached search the area in Ravine for the guaranteed rope drop.
YOU SHOULD ABSOLUTELY GO THROUGH THE RAVINE ENTRANCE YOUR FIRST TIME
You’ll come out on the highest point in Bleak Inlet near the Radio Tower and the Pensive Lookout tower, you need to get the cannery Workshop code from the radio tower and you need to attach the climbing rope near to Lookout tower (the rope is hung on a hook by the lookout door). You CAN NOT reach this area if you take the Muskeg entrance.
Here are the names of the 17 locations you need to map in Bleak Inlet. And make sure to use the new Surveyed Locations feature in the Collections section of your Journal to see what areas you have and haven’t marked.
Bleak Inlet:
*** Spoiler - click to reveal ***•Cannery Worker Residences
•Coastal Highway Terminus
•Echo One Radio Tower
•Fallen Lighthouse
•Frozen Delta
•Landslide
•Last Resort Cannery
•Long Bridge
•Lower Raven Falls
•Pensive Lookout
•Raven Crossing
•Ravine’s End Waterfall
•Summit at Ravine’s End
•To Cave System (Forlorn Muskeg’s entrance)
•To Ravine (Ravine’s entrance, obviously)
•Washed Out Trailers
•Workshop
Here’s a map of the area to help as well:
https://th.bing.com/th/id/OIP.rvUxfFZv27t8KdkTf16CmgHaHa?pid...The only problem areas I had trouble getting unlocked in my tracker was the *Workshop in the cannery area that you have the code from the Radio Tower (the code is 154, but that doesn’t matter since you need to grab and have the note in your inventory) and wait for an Aurora, as well as complete a neat climbing and platform puzzle to get to the workshop.
The Cannery itself wouldn’t register either until I tried mapping the area from the top of the hill on the highway nearby.
The *Frozen Delta was the most annoying. It’s on the Left part of the map and it’s not just one thing but the entire frozen river with all of its branching paths, once all of that is mapped it should trigger as discovered.
Now I did this on my 500 days Pilgrim save with the only feat I had unlocked at the time Free Runner equipped.
However you can unlock this and other achievements in the Custom Mode, and I recommend using that mode for this.
Note: You aren’t able to make any Feat progression while in custom mode, so if this is your first play through you should play on Pilgrim instead so you can unlock those as you play and have them for later play throughs. But If you’ve already done all that and just want to get this as fast as possible then Custom Mode’s your friend!
You can make the animals non-aggressive, increase the loot spawn chances for everything, disable blizzards, and most importantly you can disable to Sprain ankle/wrist system so you don’t have to worry about it whenever you go up or down steep slopes. You can also make the days and nights longer but I kept it at default since I’m used to that.
The customization menu is a little confusing to use so read carefully and if you think you made a mistake just make a new save.
Good luck out there fellow Cartographers!