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