Direct answer
Objectives follow journal display order. Some depend on your choices; follow the active objective in the game.
Result
Legend claims the warriors of Spikeroog had tested their mettle in the arena found near the cliffs on the northwestern edge of the isle for centuries. Sadly, an unfortunate recent event had led to the arena being haunted by the ghost of a defeated warrior. Geralt agreed to send the wraith off into the afterlife for good.
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