THE HIDDEN CITY - CLIMB THE BELLY OF THE SERPENT
-- Walk across the beam and jump to the wall ahead. Traverse up and right on to the overhang.
-- At the next beam, swing from the pole and attach to the craggy wall, then rappel down to wall-run to the suspended cage on the right.
-- Climb up, jump to the next cage, and climb up.
-- Jump to the wall ahead and scramble up. Keep climbing up until you reach the narrow ledge and sidestep across.
-- Jump to the next wall and throw the Grapple Axe to catch the ledge, then make your way up until you reach the tunnel.
-- At the end, turn left and scramble up to the horizontal boards to the wall above. At the top, shimmy and jump to the left, then scale down the wall above the doorway before rappelling down to the floor.
From there, enter the room and climb up the narrow chute on the right side. As you enter into the next room, perform a stealth kill on the guard.
Head to the back of the room to find the weak wall in the right corner, and break through to enter the next section.