The Ruins of Pheebor

Nested hint: How do I get here?
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Hint: Oops! I woke up a Ghoul!

Hint: I can't get rid of this Undead Warrior!

Nested hint: What am I supposed to do with the arch?
(sorry, cannot decode section)
Nested hint: I know how to use the arch, but what do I do there?
(sorry, cannot decode section)