"Inside the Stronghold" was a job and hub level in "Fire in the Sky" of Sly Cooper and the Thievius Raccoonus.
Walkthrough[]
First section[]
Once you enter this area, run up and grab onto the hook to swing onto the building, then climb to the top. You will need to collect two more treasure keys to unlock the batch of rockets.
To your right is the path leading to "Flaming Temple of Flame." To the left is a guarded bridge leading to "The Unseen Foe." This would require use of your Invisibility move. To the left of that mission is a path leading to "The King of the Hill." After unlocking the fireworks, hit them to send them flying. They will break open the hatch on the roof, which will allow you to access the remainder of the hub.
Second section[]
To the left is another batch of fireworks that you will need to unlock in order to confront the Panda King in his giant statue. To access "A Desperate Race," spire jump on the torch to your right and walk up on top of the cave, with a gorilla guard below guarding the entrance. From there, you can also access "Duel by the Dragon," by climbing a pipe ahead. To access "Rapid Fire Assault," get onto the small ledges of the rotating mechanism to get onto the bridge.