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