Defeat Eredin.

Complete the contract on Morvudd.

Visit Tir ná Lia and convince Ge'els to betray Eredin.

Slide downhill uninterrupted for at least 10 seconds.

Win all the horse races in the game.

Defeat Olaf, the Skellige champion of unarmed combat.

Complete the subplot about choosing Skellige's ruler.

Win a round of gwent using only neutral cards.

Kill 50 opponents using the environment (e.g. swamp gas, insects or objects).

Play three hero cards in one round of gwent and win the match.

Collect the formulae for 6 different bomb types.

Find and equip all the elements of one set of witcher gear.

Destroy 10 monster nests using bombs.