There are FIVE orbs in The Fortress of Jaidhar:
The first Orb will automatically be earned upon ringing the large bell.
Next, you will ascend a flight of stairs onto a parapet and have the option to go left or right. Going left will lead to wooden planks and a wall to climb, followed by some platforming and the second Orb. Finally, you will come to a large open area with a big gate and an audio cutscene where Raji says, "this is it!". Go far to the left of this closed gate, near the wall. There will be some flowers on a wall with holds you can grab (between a circular tower on the wall and a building jutting out). Climb the wall and onto the top of the building for the third Orb. Near the end of the chapter, you'll be in a large room with scaffolding on both side walls—platform up the right side scaffold for the fourth Orb. In the end, you'll exit through a large doorway with light coming out of it, into an outdoor corridor, and up to another large, closed door. Go to the left side of this building for the final Orb of Jaidhar.