The Witcher 3: Wild Hunt

Collect all trophies.

Finish the game on the "Death March!" difficulty level.

Reach character development level 35.

Kill at least 5 opponents in under 10 seconds.

Defeat Olaf, the Skellige champion of unarmed combat.

Make an opponent suffer from bleeding, poisoning and burning simultaneously. Do this 10 times.

Kill 2 monsters you have a contract on without using Signs, potions, mutagens, oils or bombs.

Destroy all monster nests in the Velen / Novigrad region, or in Skellige.

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

Finish the game on the "Blood and Broken Bones!" or "Death March!" difficulty levels.

Acquire all the Abilities in one tree.

Use the Axii Sign to force one opponent to kill another. Do this 20 times.

Kill 10 opponents by knocking them off somewhere high with the Aard Sign.