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