As soon as your meeting with the Lord of Bones finishes, you're automatically transported into the location [City of the Dead]. Listen to the conversation with the Chancellor and position yourself in front of the entrance to a new dungeon. To unlock the access to The City of the Dead, you need to use the recently acquired skill, namely Soul Split. The best way to activate this skill is to press the TAB key and choose it from the scroll-down menu (the above screenshot).
In accordance with the above description, using Soul Split led to summoning two halves of the soul, whereas the physical form of the dead assumes and indestructible, rocky, posture. Begin by sending the first call of the soul to the statute on the left, shownin the above screenshot.
Grab onto the statute and move it to the left as far as you can (the above screenshot). After you perform this action, press and hold the E key, which should allow you to take control of the other half of the soul.
Move the other half to the statue on the right seen in the above screenshot. Just like before you need to move the statute (this time as far to the right as you can).
If you perform those actions correctly, the entrance to the of the dead should be unlocked. From the scroll down menu choose Soul Split again, and return to your previous form. You can enter now the new location.