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