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.
Complete the contract on Sarasti.
Kill 10 opponents by knocking them off somewhere high with the Aard Sign.
Acquire all gwent cards available in the base version of the game.
Defeat Tybalt and win the gwent tournament held at the Passiflora.
Play three hero cards in one round of gwent and win the match.
Win a round of gwent using only neutral cards.
Acquire all the Abilities in one tree.
Complete all fistfighting quests in Velen, Skellige and Novigrad.
Destroy all monster nests in the Velen / Novigrad region, or in Skellige.
Complete all witcher contracts.
Make an opponent suffer from bleeding, poisoning and burning simultaneously. Do this 10 times.
Complete the contract on Morvudd.
Defeat Olaf, the Skellige champion of unarmed combat.
Finish the game on the "Death March!" difficulty level.
Take part in the assassination of King Radovid.
Win all the horse races in 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.
Ignite the gas produced by a Dragon's Dream bomb using a burning opponent. Do this 10 times.
Kill 2 monsters you have a contract on without using Signs, potions, mutagens, oils or bombs.
Use the Axii Sign to force one opponent to kill another. Do this 20 times.
Attack, counter, cast a Sign and throw a bomb (in any order) in under 4 seconds.
Reach character development level 35.
Have all possible Place of Power bonuses active at the same time.
Finish the game on any difficulty.
Finish the game on the "Blood and Broken Bones!" or "Death March!" difficulty levels.
Defeat Eredin.
Perform 10 effective counterattacks in a row without getting hit or parrying.
Visit Tir ná Lia and convince Ge'els to betray Eredin.
Discover 100 fast travel points.
Find Ciri.
Bring all possible allies to Kaer Morhen for the battle against the Hunt.
Complete the subplot about choosing Skellige's ruler.
Help Yennefer extract information from Skjall's body.
Find and free Dandelion.
Resolve the doppler problem in Novigrad.
Destroy 10 monster nests using bombs.
Collect the formulae for 6 different bomb types.
Kill 50 opponents using the environment (e.g. swamp gas, insects or objects).
Complete the contract on the shrieker.
Defeat an opponent in a fistfight without taking any damage.
Find the baron's wife and daughter.
Kill 3 opponents in one fight using 3 different methods (swords, bombs, crossbow, Signs, etc.).
Complete the subplot involving Keira Metz.
Read 30 books, journals or other documents.
Learn 12 potion formulae.
Find Yennefer of Vengerberg.
Kill 5 foes in a fight without taking damage (except for Toxicity) and without using the Quen Sign.
Fill all mutagen slots.
Kill at least 5 opponents in under 10 seconds.
Win a round of gwent with a total strength of at least 187.
Defeat all the fallen knights and loot their campsites.
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.
Participate in all the activities at the wedding.
Kill 20 cows.
Slide downhill uninterrupted for at least 10 seconds.
Be under the influence of seven potions or decoctions at the same time.
Kill 3 opponents with their own arrows.
Kill the prince cursed into a toad.
Collect all the cards in the Skellige deck.
Serve time in Toussaint.
Be decorated with the Order of Vitis Vinifera.
Develop a mutation.
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.
Obtain a flawless victory in all the competitions during the knights' tourney.
Use all available options for developing Corvo Bianco.
Travel to the Duchy of Toussaint.