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