The Moria Orcs hold control over the Grand Stair, and leading them are Igash the Fanatic and his Devoted minion. Alongside them are a host of fearsome Orcs from the very heart of Moria.
'I know little of Igash... only that he is followed without question, and that his Devoted seems to be nothing more than an ordinary weak-willed Orc. The two of them clutch the many tribes with an iron fist, commanding and taking at will, always unchallenged.
'Igash commands his forces from on high, and the path to him should be clear. Climb the old bridges, up to the highest platform. There, I suspect, he will sit vainly upon his crude throne. But beware... his Devoted will be keeping watch along the way.
'Make your way north-east, ${PLAYER}. There, you should enter the Grand Stair and defeat Igash and his Devoted. But be wary, for the Stairs climb high; a false step will be your doom. Only sure-footed folk should risk this excursion. May the paths of the dwarves guide your feet well.'
Igash and his Devoted are high up in the Grand Stair, north-east of the Orc-watch.
Avar has asked you to go forth and defeat Igash and his Devoted.
Avar is at the Orc-watch, south-west of the Grand Stair.
You should return to Avar and inform him that you have slain Igash and his Devoted.