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