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