Hermit:
Ah, yes, the second test... the Archon of Halisha has the fifth Stone of Commune.
After you get it from him, take it to the northwestern end of the Wall of Argos. Commune with the Tablet of Vision there.
Slaying the Archon of Halisha isn't going to be easy!
He can usually be found inside the Sepulchers, but if you attack his minions on the north side of the Wall of Argos, that usually draws him out!
Good luck! Your success means that my long wait is finally over!