Borderlands 3

So I'm mostly copying a outline from another location discovery achievement but felt this achievement needed a better solution than the "just explore" solution and also I have never done a solution before so hopefully it's not too bad for everyone.

To view unlocked locations go to the map, and press the Y button to view from ORBIT, and then select the location and press LS (the left analog stick) to view progress

Locations should contain:
Sandblast Scar (4)
Devil's Razor (13)
The Great Vault (2)
Cathedral of the Twin Gods (5)
Destroyer's Rift (4)
Konrad's Hold (12)
The Splinterlands (6)
Guts of Carnivora (5)
Carnivora (5)
The Droughts (13)
Covenant Pass (3)
Ascension Bluff (5)
The Slaughter Shaft (1)

If you're like me and was 77/78 for a while you likely haven't found The Slaughter Shaft, an area accessible through Konrad's Hold and is NOT story related so can be missed very easily.

If you have more than one location missing and have the whole map uncovered likelihood is that an area or two didn't register as discovered despite you having been there. I have found a lot of people (including myself) having the same issue with The Splinterlands for example with Pitt's Stop being discovered but upon arriving there again being met with the 'Area Discovered' indicator and thus now registering.

Hope this helps and let me know if any other areas are similar to my problem with the Splinterlands, I'll try to update if so.

EDIT: Some people have said if you don't get the achievement while having explored all areas to explore them all once more in a single instance/session and it should unlock, others also said that loading the game without the DLC got them the achievement so be wary until a patch comes along to fix things

Yeah you can go to other guides for the locations but that's what you came here for … here they are:

Pandora
• Sandblast Scar: 4
o Tannis’ Garage
o The ‘Cade
o Diggit Canyon
o Reckless Risers

• The Slaughter Shaft: 1
o The Slaughter Shaft (Accessed through Konrad’s Hold)

• Devil’s Razor: 13
o Roland’s Rest
o ECHONet Hub37
o Phalanx Pass
o Buff’s Bluff
o Bollock’s Niche
o The Sin-A-Plex
o Dahl Refinery
o Sheega’s Kennels
o Cave-in Point
o Avie’s Fort (Side Mission: Boom Boom Boomtown)
o The Lonely Pillar
o Mesa Marron
o Dusty Acres

• The Great Vault: 2
o Dig Site
o Troy Calypso Boss Fight

• Cathedral of the Twin Gods: 5
o Fateward Walk
o Outer Sanctum
o Courtyard of the Damned
o Altar of the Twins
o Eridium Sluice

• Destroyer’s Rift: 4
o Treacherous Path
o Treacherous Drop
o Crown of Tyrants
o Vault of the Destroyer (enter Vault after Endboss, no map data available)

• Konrad’s Rest: 12
o The Arrogant Approach
o Unused Escape Tunnel
o Turntide Shed
o Fallback Tracks
o Traitor’s Mess
o The General’s Perch
o Chapel of Unheard Prayers
o Last-Stand Yard
o These are No Mines (Side Mission: The Demon in the Dark)
o Bleedout Smithy
o Crawling Dungeons
o Angel’s Light

• The Splinterlands: 6
o Pitt’s Stop (bugged – doesn’t register for some players. Simply revisit the area by driving back in and out)
o Logan’s Spar (requires very specific positioning, small area)
o The Homestead
o The Rave Cave
o Sifted Mar
o Big Danny’s Chop Shop

• Gut of Carnivora: 5
o Gassup Garage
o The Gutworks
o Windshaken Catwalks
o Mack’s Head Room
o The Main Stage

• Carnivora: 5
o Festival Grounds
o Stacked Deck
o La Cage ‘O Tinks
o Carnivora’s Playground
o Azlan’s Stash

• The Droughts: 13
o Crimson Command
o Varkid Valley
o Ellie’s Garage
o Ellie’s Scrapyard
o Super 87 Racetrack
o Eridian Dig Site
o Raider’s Drydock
o Sun Smasher Camp
o Warchief’s Domain
o Bloodbucket’s Chapel
o Pit of Fools
o Dahl Orbital Control
o Road to Ascension

• Covenant Pass: 3
o Propaganda Center
o Confession Chamber
o Shiv’s Sanctum

• Ascension Bluff: 5
o The Sty
o Puttergunk’s Perch
o Path of Sacrifice
o Holy Broadcast Center
o Spit Respite