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