Grimrock

Is there a hint somewhere to find the Spiritwalker pendant?

You can find the Spiritwalker Pendant after completing the Ulqerak mausoleum area.

Where is that area? Do you mean the Palace area? I am at a point where I can't go anywhere. I finished the Palace in the graveyard but not the gated area outside it. The only places I can go is to the forest but can't open that door yet and I don't have the pendant to go further in that section.

In the Ulqerak mausoleum (level 3) there is a room with a sign that says: "Honour the brave warriors of Ulqerak and their great commander because they serve the city, and you".

In that room there is a secret button that can reveal a teleporter.

That teleporter can take you to an area where you can find the Spiritwalker Pendant.