You told him that you will help Uska on behalf of the Highlander and Peltasta Masters. Talk to Uska again.
Objective: Talk to Knight Commander Uska
Progress
Uska told you that the work needs to start again at Crystal Mine, but he can't due to the gigantic monster in Crystal Mine 2F. Get rid of the source of the rumor in Crystal Mine 2F.
Objective: Defeat the source of the rumor in Crystal Mine 2F
End
The source of the rumor was Bearkaras. Report to Uska when you defeat Bearkaras.
