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