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