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