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.
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.
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.
Kill 3 opponents in one fight using 3 different methods (swords, bombs, crossbow, Signs, etc.).
Ignite the gas produced by a Dragon's Dream bomb using a burning opponent. Do this 10 times.
Win a round of gwent using only neutral cards.
Acquire all the Abilities in one tree.
Complete all witcher contracts.
Complete the contract on Morvudd.
Destroy all monster nests in the Velen / Novigrad region, or in Skellige.
Have all possible Place of Power bonuses active at the same time.
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.
Take part in the assassination of King Radovid.
Win all the horse races in the game.
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.
Acquire all gwent cards available in the base version of the game.
Complete all fistfighting quests in Velen, Skellige and Novigrad.
Defeat Olaf, the Skellige champion of unarmed combat.
Help Yennefer extract information from Skjall's body.
Defeat Tybalt and win the gwent tournament held at the Passiflora.
Discover 100 fast travel points.
Complete the contract on Sarasti.
Resolve the doppler problem in Novigrad.
Find and free Dandelion.
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).
Kill 2 monsters you have a contract on without using Signs, potions, mutagens, oils or bombs.
Complete the contract on the shrieker.
Complete the subplot involving Keira Metz.
Defeat an opponent in a fistfight without taking any damage.
Find and equip all the elements of one set of witcher gear.
Kill 5 foes in a fight without taking damage (except for Toxicity) and without using the Quen Sign.
Kill at least 5 opponents in under 10 seconds.
Find the baron's wife and daughter.
Perform 10 effective counterattacks in a row without getting hit or parrying.
Collect the formulae for 6 different bomb types.
Destroy 10 monster nests using bombs.
Read 30 books, journals or other documents.
Find Yennefer of Vengerberg.
Learn 12 potion formulae.
Finish the game on the "Death March!" difficulty level.
Complete the contract on the Woodland Spirit.
Kill 20 cows.
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.
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.
Win a round of gwent with a total strength of at least 187.
Participate in all the activities at the wedding.
Defeat all the fallen knights and loot their campsites.
Slide downhill uninterrupted for at least 10 seconds.
Kill the prince cursed into a toad.
Kill 3 opponents with their own arrows.
Serve time in Toussaint.
Be decorated with the Order of Vitis Vinifera.
Find all grandmaster diagrams for each witcher school.
Be given Aerondight by the Lady of the Lake.
Develop a mutation.
Unlock the bonus for equipping all the witcher gear elements from one School.
Obtain a flawless victory in all the competitions during the knights' tourney.
Collect all the cards in the Skellige deck.
Use all available options for developing Corvo Bianco.
Travel to the Duchy of Toussaint.