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