Unless otherwise stated, this quest is accessible during your exploration of Skellige in Act I. Once completed, Secondary Quest: Fists of Fury: Champion of Champions becomes available, once you’ve completed all the associated Fists of Fury quests.
The Witcher 3: Wild Hunt eGuide Secondary Quests Secondary Quests: Skellige: Spikeroog (1)
Unless otherwise stated, this quest is accessible during your exploration of Skellige in Act I. Once completed, Secondary Quest: Fists of Fury: Champion of Champions becomes available, once you’ve completed all the associated Fists of Fury quests.