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