1. Possession
https://www.youtube.com/watch?v=S0U0DAX1lUk Location: Skellige (Talk to Crache) Have a bit poke around the forums of the land and you'll find people talking about a 'certain quest' that takes place in Skellige - one that totally blows them away and makes many (if not all) other RPGs pale in comparison to such a fantastic ending. Naturally this list isn't going to delve into spoilers, but sufficed to say you'll want to make sure you're very comfortable with the combat system (something you should be by the time you've reached Skellige) as well as applying oils, flicking between spells on the fly and using bombs to create distance between you and your enemies. The recommended level is between 15-18 for the right amount of challenge as you'll come up against a formidable foe indeed - but this really is worth tracking down as a tale you'll tell any who'll listen. What are your favourite side-quests so far that left you wanting to tell the world about them? Let us know in the comments!