Step on the slope to reach the bottom of the pit. The camera shows you an opening. You have to climb and reach there.

 Jump and grab the first ledge. Pull up, Turn to face the opposite alcove and jump to grab it. Remember how you did that jump to avoid falling on the spikes? You have to use the same strategy until you reach the top. This means you have to run, jump and press the left key in mid air, grab the alcove and pull up. Learn this well because you are going to need it in this level! Jump to the alcoves this until you reach the top. (You may want to save your game occasionally since it’s a little hard to climb up.) Jump diagonally and grab the edge of the opening. Pull up.

Always turn to left until you reach the balcony. Keep walking.

[Skip this part if you don’t want the Large Medipack]

Don’t jump over the gap. You can see a guard below. Go down and run to the small hole in the wall. Pick up the Large Medipack and get back to the balcony using the vines.

***

Jump to the other side of the balcony and activate the switch at the other side. A brief cut scene shows the door and two guards. (You can go there using the ledges in the wall if you want.)

“Finding the crystals”

Go to the open door. Don’t run down the hall. Instead jump to grab the crack in the left wall. Shimmy to right, crawl to the small space then hang from the other side. Keep traversing to right until you reach under hole. Crawl there and pick the First Crystal. Return back to the hall and run to the throne room. Go to of the window and climb it.

A cut scene shows you the courtyard. (Wow!)

Drop down to the balcony (be careful. There’s a whole under one of the windows!). Use the stairs and go down. Avoid the guards and go to the other side of the pool then go near the pit. There’s a plant on the left side and the Second Crystal is behind it. Go near it. You can't pick it up from here so hang from the edge, shimmy to right and pull up. Pick up the crystal and get back to the pool.

Go to the other side and pass the arch. The Third Crystal is hidden somewhere in one of the alcoves. Find it and pick it up. Go back to the pool.

Noticed some of the walls have darker vines? Those walls are climbable. Go to the wall near the pull and climb up. You have to reach to the other arch (you may want to save your game). Cross the first arch then turn to face the window on the other side. You have to run, jump and grab it. (Use the same method that you used for climbing/grabbing the alcoves in the pit). Pull up and enter the room. Go to the other window and hang from it. Release to land on a platform. Jump to the other arch and cross it to the other side. Jump to the alcove, pick up the Forth Crystal and return back to the platform under the window.

You can see that the guards have moved to this part. Hang from the ledge and release your grip to slide to the ground. Don’t return back to the pool. There’s a hallway with a golden gate near you. Go there and you will find a hole on the left wall. Crawl there and use the ladder to go down. You find a close door. Those four crystals are the keys. The door opens after placing the forth crystal. Save your game before entering the hallway.

Skeletons attack as soon as you enter the hall so quickly run to the left, then right. Jump over the pit and continue running. Do not stop at all. There’s a small opening in the wall on the left side. Jump and grab the edge of it, pull up then crawl in. (you may want to save your game)

Walk up the stairs. The left set of stairs get you back to the courtyard where you found the four crystals so go up the right ones. Continue until you reach the end of the hallway and jump to grab the ladder. Climb the ladder and back flip to land on the higher balcony. There's a switch on one of the columns. Activate it. The door to the upper balcony opens.

Go through the door and jump to the window in the opposite balcony. Pull up. (Save your game)

[Skip this part if you don't want the Large Medipack]

Jump and grab the window on the left side. Pull up and get to the other side. Pick up the Large Medipack.

You have to go back to the last room using the window but it's a little tricky. Run and jump diagonally to grab the edge of the window. Pull up.

***

Jump and grab the window in front of you. Pull up, turn around and climb down the vine. Keep going down until you reach the alcove. Release your grip and grab the lower part. Pull up and crawl to the right. (You have to pull up before Kraene gets to a climbing position.Try releasing and grabbing the edge quickly. This gives you another chance)

Crawl in the hole at the end of the walkway. The fastest way for finding the library is this: Left, Right, Right, and Left.

One of the bookcases in the library is smaller than the others. Go to it. Jump, grab the edge and pull up. Jump on the other bookcases until you reach the hole in the wall. Crawl to the other side.

A brief cut scene shows you the environment.

There are two guards in this area. Quickly run to the end of the hallway and turn right. There's a hole in the wall. Use it to crawl out.

You have reached the bottom of the pit (finally!).

A skeleton comes out of the sand as soon as you step on it.

[Skip this part if you don't want the Large Medipack]

Run and jump over the river (you can swim to the other side if you  missed the jump). There's a Large Medipack behind one of the rocks. Pick it up and jump in the river.

***

Swim to the end of the river and get out of the water. Run and jump to the ledge in front of you. Pull up. Turn left and jump to the other ledge and from there jump diagonally to the platform on the left. Use the vine to climb up and backflip to land on the ledge behind you. Keep jumping on ledges until you reach the walkway on the other side. Walk to the right side and crawl through the small hole in the wall. There are three paths. Use the one in front of you. When you reach the other side, go and talk to the Lux Veritatis member and watch the last cut scene. (The password for the game bonus is in this cut scene)

Kraene gives the book to the Lux Veritatis member and asks him to hide it in a secret place. Unfortunately, the guards find her and bring her back to her father. Unable to find the book, Gleane kills her own daughter but before he manages to do so she curses him and tells him that someone will come in the future and gets her revenge from him.