The video above is the The Witcher 3 Wild Hunt Fists of Fury: Skellige Secondary Quest Walkthrough and shows how to complete Fists of Fury: Skellige, the quest featured in The Witcher III: Wild Hunt.
The video walkthrough covers the following objectives:
Defeat Valgard. Defeat Einar.
Defeat Grim.
Defeat Olaf.
Talk to the fight organizer.
