'It falls to me to oversee the slaughter of the leaders of this disgusting encampment. The Sixteenth Hall was once used as housing and storage for the dwarves of Moria, but now it is an infestation of Orcs!
'Well, I aim to put a stop to this problem. Enter the Sixteenth Hall, north-east of here, and remove the taint of the guardians, Shamans, and those especially dreadful Orcs that explode into spores when they draw near.
'Do these things, and then return to me when you are done, for I should like to count the notches on your weapon. This gloom on me will ease when I see evidence of the Orcs' downfall.'
The Sixteenth Hall is an area overrun with Orcs, many of whom suffer from a terrible illness that sweeps through. Shamans tend to the ill whilst the rest of the halls are defended by those that remain able to do battle.
Mallas, an Elf ally to the dwarves, belives that there is something secret beneath the Sixteenth Hall and wishes to learn the true purpose and source of the plague.
Odmar sent you to find and destroy the Orcs that he believes are leading this diseased incursion into the Sixteenth Hall.
You fought valiantly against the infected Orcs of the Sixteenth Hall and defeated many guardians, Shamans and the Orcs bearing terrible fungus. You should now tell Odmar that you did as he bade.