You give A city key to Rendburg to Mayor.
The mayor examines the key and starts smiling.
The mayor jumps on you and starts hugging. After that little
emotional moment he stands up and says 'Thank you my friends for
bringing back this key. Now I can lead my people back to the valley.
And now with this key I can lock the gates in the future
if any evil forces try to conquer our city again.'

137284: Shenare the evil polar demon 

Managed to solo Shenare and everything leading up to it, but didn't actually
get the quest. Maybe I'm missing a checkpoint, or the guest has a chance to
reset or something. Probably won't be bothered to try again solo, a shame, but
at least I get to add another nice solo kill to the list.