I am to search the hills of western Highpass on Kithicor Island, in Phantom Sea, for anything that may reveal the minds behind the unrelenting undead attack upon Castle Highhold.
Search north-western paths of Highpass: the update is at 1124, 286, -124
Slay the Akhevan lifetaker (102^H) and his risen Shralok (102vH)
Kill 4 Akhevan attackers on top of mountains just to the south.
Locate Waulon Highpebble within the craggy peaks at 657, 394, 259 .