It's a Trap

Objectives
Approach Matyas to start the duel. Assist Nadjia when Matyas cheats.
 * Nadjia's duel completed
 * Meet Nadjia back inside the tower.

Description
At last, I will have my vengeance!

I am certain Matyas will flee again if he sees me first so you will need to confront him on my behalf, friend. Then, while he's distracted, I will engage him.

At that point, your obligation as my second is a formality. You must assure Matyas does not dishonor the duel and cheat. When he inevitably does, I expect you'll help me defeat him.

He's just through the portcullis there.

Rewards
You will also receive:
 * 9,700 XP
 * +250 reputation with Court of Harvesters
 * +250 reputation with Court of Harvesters

Progress
Matyas will apologize, or he will die.

Completion
I would have allowed an apology, but he chose treachery and has paid the price.