The Falconeer
29 Achievements
GOG
Impenetrable Walls
Found all the fortified locations
1.4%
How to unlock the Impenetrable Walls achievement in The Falconeer - Definitive Guide
I Sphyre I
TrueAchievements
TrueAchievements
As with all the other locations this video does a fine job of showing you where they are on the map.
(I take NO credit for making it. That belongs to Jak 003)
Be aware not all of them can be unlocked in every chapter. I suggest finishing the story first before attempting to unlock some of these and then switching chapter in the main menu to Dunkle. Then fly to all the locations shown in the video and discover them. Some might be hidden under a fog on the map but you can still fly to them. Fort Wright might be hostile towards you as its a pirate base. Just destroy all the turrets and capture it then fast travel somewhere else and return to it. It should now be under Imperial flag and you can "discover" it.
(I take NO credit for making it. That belongs to Jak 003)
Be aware not all of them can be unlocked in every chapter. I suggest finishing the story first before attempting to unlock some of these and then switching chapter in the main menu to Dunkle. Then fly to all the locations shown in the video and discover them. Some might be hidden under a fog on the map but you can still fly to them. Fort Wright might be hostile towards you as its a pirate base. Just destroy all the turrets and capture it then fast travel somewhere else and return to it. It should now be under Imperial flag and you can "discover" it.