Dan

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

Read 30 books, journals or other documents.

Learn 12 potion formulae.

Kill 5 foes in a fight without taking damage (except for Toxicity) and without using the Quen Sign.

Kill at least 5 opponents in under 10 seconds.

Defeat an opponent in a fistfight without taking any damage.

Finish the game on any difficulty.

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

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

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.

Perform 10 effective counterattacks in a row without getting hit or parrying.

Ignite the gas produced by a Dragon's Dream bomb using a burning opponent. Do this 10 times.

Fill all mutagen slots.

Defeat Olaf, the Skellige champion of unarmed combat.

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

Kill 50 human and nonhuman opponents by striking them in the head with a crossbow bolt.

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

Discover 100 fast travel points.

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

Acquire all gwent cards available in the base version of the game.

Defeat Tybalt and win the gwent tournament held at the Passiflora.

Collect the formulae for 6 different bomb types.

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

Have all possible Place of Power bonuses active at the same time.

Complete all fistfighting quests in Velen, Skellige and Novigrad.

Win all the horse races in the game.

Reach character development level 35.

Destroy 10 monster nests using bombs.

Win a round of gwent using only neutral cards.

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

Complete the contract on the shrieker.

Complete the contract on Sarasti.

Complete the contract on the Woodland Spirit.

Complete the contract on Morvudd.

Complete the contract on Therazane.

Resolve the doppler problem in Novigrad.

Kill 3 opponents with their own arrows.

Be under the influence of seven potions or decoctions at the same time.

Collect all available Ofieri armor and horse gear, and at least one Ofieri sword.

Win a round of gwent with a total strength of at least 187.

Travel to the Duchy of Toussaint.

Be decorated with the Order of Vitis Vinifera.

Serve time in Toussaint.

Obtain a flawless victory in all the competitions during the knights' tourney.

Be given Aerondight by the Lady of the Lake.

Use all available options for developing Corvo Bianco.

Find all grandmaster diagrams for each witcher school.

Collect all the cards in the Skellige deck.

Unlock the bonus for equipping all the witcher gear elements from one School.

Develop a mutation.