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