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