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