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