Full list of all 78 The Witcher 3: Wild Hunt achievements. It takes around 100-120 hours to unlock all of the achievements in the base game on Windows.
The base game contains 52 achievements, and there are 3 DLC packs containing 26 achievements.
Finish the game on the "Death March!" difficulty level.
Acquire all gwent cards available in the base version of the game.
Destroy all monster nests in the Velen / Novigrad region, or in Skellige.
Ignite the gas produced by a Dragon's Dream bomb using a burning opponent. Do this 10 times.
Kill 10 opponents by knocking them off somewhere high with the Aard Sign.
Make an opponent suffer from bleeding, poisoning and burning simultaneously. Do this 10 times.
Have all possible Place of Power bonuses active at the same time.
Kill 50 human and nonhuman opponents by striking them in the head with a crossbow bolt.
Attack, counter, cast a Sign and throw a bomb (in any order) in under 4 seconds.
Perform 10 effective counterattacks in a row without getting hit or parrying.
Finish the game on the "Blood and Broken Bones!" or "Death March!" difficulty levels.
Play three hero cards in one round of gwent and win the match.
Kill 50 opponents using the environment (e.g. swamp gas, insects or objects).
Kill 2 monsters you have a contract on without using Signs, potions, mutagens, oils or bombs.
Complete all witcher contracts.
Bring all possible allies to Kaer Morhen for the battle against the Hunt.
Complete the contract on Sarasti.
Complete the contract on Therazane.
Take part in the assassination of King Radovid.
Fill all mutagen slots.
Defeat Olaf, the Skellige champion of unarmed combat.
Defeat Tybalt and win the gwent tournament held at the Passiflora.
Complete all fistfighting quests in Velen, Skellige and Novigrad.
Destroy 10 monster nests using bombs.
Win a round of gwent using only neutral cards.
Complete the contract on Morvudd.
Complete the contract on the Woodland Spirit.
Discover 100 fast travel points.
Win all the horse races in the game.
Use the Axii Sign to force one opponent to kill another. Do this 20 times.
Resolve the doppler problem in Novigrad.
Complete the contract on the shrieker.
Kill 3 opponents in one fight using 3 different methods (swords, bombs, crossbow, Signs, etc.).
Finish the game on any difficulty.
Defeat Eredin.
Visit Tir ná Lia and convince Ge'els to betray Eredin.
Find Ciri.
Complete the subplot about choosing Skellige's ruler.
Collect the formulae for 6 different bomb types.
Help Yennefer extract information from Skjall's body.
Find and equip all the elements of one set of witcher gear.
Find and free Dandelion.
Find the baron's wife and daughter.
Read 30 books, journals or other documents.
Defeat an opponent in a fistfight without taking any damage.
Complete the subplot involving Keira Metz.
Learn 12 potion formulae.
Kill 5 foes in a fight without taking damage (except for Toxicity) and without using the Quen Sign.
Find Yennefer of Vengerberg.
Kill at least 5 opponents in under 10 seconds.
Acquire all the Abilities in one tree.
Reach character development level 35.
Win a round of gwent with a total strength of at least 187.
Kill 3 opponents with their own arrows.
Collect all available Ofieri armor and horse gear, and at least one Ofieri sword.
Slide downhill uninterrupted for at least 10 seconds.
Kill 20 cows.
Finish the "Hearts of Stone" expansion.
Defeat all the fallen knights and loot their campsites.
Provoke all Iris von Everec's Nightmares into fighting you at the same time and defeat them.
Recreate all of Iris' nightmares in the Painted World.
Buy all the items put on the block at the Borsodis' Auction House.
Participate in all the activities at the wedding.
Kill the prince cursed into a toad.
Be under the influence of seven potions or decoctions at the same time.
Serve time in Toussaint.
Find all grandmaster diagrams for each witcher school.
Be given Aerondight by the Lady of the Lake.
Collect all the cards in the Skellige deck.
Be decorated with the Order of Vitis Vinifera.
Unlock the bonus for equipping all the witcher gear elements from one School.
Obtain a flawless victory in all the competitions during the knights' tourney.
Develop a mutation.
Use all available options for developing Corvo Bianco.
Travel to the Duchy of Toussaint.