Death Stranding: All 39 United States of America
There are 39 outposts in Death Stranding that can be connected to the UCA United Cities of America. These UCA plug-ins are Sam's primary mission, whose goal is to unite the once prosperous America. For unlocking checkpoints, you can get two achievements: "We believe in Sam" (In Sam We Trust) and "Everyone's favorite" (Best Beloved). For the second, you will have to reach the maximum level of communication with all objects.
The points cannot be skipped. You can still find and connect all objects after history. Most UCA objects will be found automatically as the story progresses. After completing the story, check which ones you still have not found and refer to this guide to find them.
The process for obtaining the maximum link level for objects is always the same. Just deliver packages to them. Premium Orders on Hard difficulty are the best. If you manage to get an S-rank, it will give you even more likes. When you select Standard Orders on the terminals, press right to enable Premium Shipping (feature will be unlocked in Episode 3). Each object has 5 levels marked on the map with 5 stars. Some take longer to level than others. If any point "stops pumping", then just continue to bring deliveries to it, sooner or later the number of stars will increase. Focus on heavy deliveries that give hundreds of likes per delivery. One heavy delivery often costs more than 5 small ones.
The best item for pumping points is Ziplines. Create a network of tethers between the objects you want to improve. Now you no longer have to walk, the load does not slow you down, the creatures do not interfere with you. Cables are the best time saver in the game, you can place them every 300 meters, which allows you to move around the entire map.
East region
Point #1 - Capital Knot City
Will open automatically on the second order.
Waystation #2 - Waystation West of Capital Knot City
Will open automatically on the fourth order.
Point #3 - (Ludens Fan)
Bring him the Lost Cargo scattered around his territory.
Point #4 - (Distribution Center West of Capital Knot City)
Will open automatically on the fifth order.
Point number 5 - Wind farm (Wind Farm)
Will open automatically on the ninth order.
Point #6 - (Musician)
Point No. 7 - Port Knot City
Will open automatically on the fourteenth order.
central region
Point #8 - Lake Knot City
Will open automatically on the eighteenth order.
Point #9 - Peter Englert
Point #10 - Engineer
Will open automatically on the nineteenth order.
Point #11 - Elder
Will open automatically on the twentieth order.
Point #12 - Craftsman
Will open automatically on the twenty-second order.
Point #13 - Distribution Center South of Lake Knot City
Will open automatically on the twenty-fourth order.
Point #14 - Collector
Go to him (place a ladder or anchor and go down the abyss), he will have a delivery for you in the terminal. He wants you to pick up some items from the mule camp.
Point #15 - Film Director
Will open automatically on the thirty-first order.
Point #16 - Junk Dealer
Will open automatically on the thirty-fourth order.
Point #17 - Chiral Artist's Studio
Will open automatically on the thirty-third order.
Point #18 - South Knot City
Will open automatically on the thirty-eighth order.
Point No. 19 - Cosplayer (Cosplayer)
Please accept an order for Sam [Order #37] Sewing Kit Delivery: Cosplayer. You will receive it at the Distribution Center South of Lake Knot City or the South Knot City after advancing the story to the end of Episode 3. You can get this task at one of two points.
Point #20 - Weather Station
Will open automatically on the twenty-seventh order.
Point #21 - Timefall Farm
Will open automatically on the twenty-eighth order.
Point #22 - Old Courier (Veteran Porter)
Waypoint #23 - Waystation North of Mountain Knot City
Will open automatically on the forty-first order.
Point #24 - Distribution Center North of Mountain Knot City
Will open automatically on the forty-third order.
Spot #25 - Novelist's Son
Spot #26 - Photographer
Will open automatically on the fifty-first order.
Point #27 - Mountaineer
Will open automatically on the fifty-first order.
Spot #28 - Spiritualist
Will open automatically on the fifty-third order.
Spot #29 - First Prepper
Point #30 - Mountain Knot City
Will open automatically on the forty-fourth order.
Point No. 31 - Doctor (Doctor)
Will open automatically on the forty-eighth order.
Point #32 - Heartman's Lab
Will open automatically on the fifty-fifth order.
Spot #33 - Roboticist
Will open automatically on the forty-seventh order.
Point #34 - Geologist
Will open automatically on the fifty-eighth order.
Point #35 - Paleontologist
Will open automatically on the fifty-ninth order.
Point #36 - Evo-devo Biologist
Will open automatically on the sixty-first order.
Point #37 - UCA-41-011: Chiral Relay (UCA-41-011: Chiral Relay)
Will open automatically on the sixty-second order.
Western region
Point No. 38 - will be added later
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Point No. 39 - will be added later
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That's all the objects needed to complete the trophy. There are other marked locations, like two incinerators, but there are no people or supplies there, and they can't join UCA or level up. These 39 dots are the only ones you need to get the achievements.