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