After you acquire the lantern choose the narrow corridor. Go South (the above screenshot). Stop after you reach the void, to the lantern on the ground, and start a wall run along the right wall. Now use of the Death Grip again so that you can continue on your path with the lantern.
Enter the room that you have already explored, but this time, focus on mounting the lantern on the statue (the above screenshot).
For starters, turn the statue so that the lantern sheds its light on the crystal over the southern gate. This way you will unlock access to another [Book of the Dead Page] (side quest [The Book of the Dead]). Return to the statue this time turned the lantern towards the southern gate, shown in the above screenshot. Wait for them. Balconies to rise and proceed to the door visible in the distance.
Find to the interactive creeper and start climbing. Grab onto the ceiling on the way and move towards another vertical wall. Wall run towards the interactive catch and continue to the left. Stop only when the game visibly sets the camera away from the player character. Lean back, and jump back and use the Death Grip on the way, in order to catch on to the interactive catch (the above screenshot).
Climb up further creepers. After you reach the room. Start wall running along the wall, but make sure that you bounce off of the wall. After you reach one of the comments open(the above screenshot). Continue your wall run until you catch on to a vertical pole. You can now. Jump to the ledge located below, and find the chest and a new doorway.
Start exploring the new location by disposing of the ghoul. This should pose no problem. But you'll need to make sure that you don't fall during the battle, from one of the balconies. After you win, position yourself somewhere nearby (e.g. , Near the exit that is locked for the time being, or on the metal balcony), and use Soul Split.
Send the first call for the sole to the right from the starting point. Find and acquire Relic of Etu-Goth (side quest [Lost Relics]) and Interact with the switch shown in the above screenshot, which will lead to turning the metal balcony by 90°.
Terminate soul split and activate it again (the point of this is to summon the half of the soul that you used for interaction with the switch). Use the first half for jumping on the lever shown in the above screen. on this lever will result in a new passage being open.
Switch to the other half, now (the first one needs to remain on the lever) and find the place from which you can acquire a shadowbomb using Death Grip. Go with the bomb over the metal bridge that you have turned. Turn left and toss it into the switch shown in the above screenshot.
[TIP: theoretically you may now leave this area, but I advise that you tried to reach the treasures described below.]
For a change now, choose the right corridor and you will reach the place where you will be attacked by two new ghouls. Remember to attract them one by one, and smoked let yourself be cornered at the same time. After you win the battle, explore the area and find the chest (the above screen).
Stay in the southern part of the location and find the creeper shown in the above screenshot. Use it to reach the place in which, after you lean back and jump back, you can catch a Boatman Coin in mid-flight. You can now terminate Soul Split and go through the unlocked northeastern door.
After you get to the narrow corridor, start wall running along the left wall. When bounce off to the right wall and to the left wall again. Make sure that none of the wall runs is too short. Otherwise you won't be able to reach the corner, and bounce off again. Allow death, to reach the interactive edge. And after you carefully jump down, interact with the nearby switch.