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.
Attack, counter, cast a Sign and throw a bomb (in any order) in under 4 seconds.
Kill 10 opponents by knocking them off somewhere high with the Aard Sign.
Kill 2 monsters you have a contract on without using Signs, potions, mutagens, oils or bombs.
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.
Use the Axii Sign to force one opponent to kill another. Do this 20 times.
Play three hero cards in one round of gwent and win the match.
Finish the game on the "Blood and Broken Bones!" or "Death March!" difficulty levels.
Finish the game on the "Death March!" difficulty level.
Destroy all monster nests in the Velen / Novigrad region, or in Skellige.
Acquire all gwent cards available in the base version of the game.
Perform 10 effective counterattacks in a row without getting hit or parrying.
Win a round of gwent using only neutral cards.
Defeat Tybalt and win the gwent tournament held at the Passiflora.
Acquire all the Abilities in one tree.
Have all possible Place of Power bonuses active at the same time.
Make an opponent suffer from bleeding, poisoning and burning simultaneously. Do this 10 times.
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.
Finish the game on any difficulty.
Defeat Eredin.
Take part in the assassination of King Radovid.
Reach character development level 35.
Find and equip all the elements of one set of witcher gear.
Complete the contract on Therazane.
Complete the contract on Sarasti.
Discover 100 fast travel points.
Complete the contract on Morvudd.
Kill 5 foes in a fight without taking damage (except for Toxicity) and without using the Quen Sign.
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.
Help Yennefer extract information from Skjall's body.
Collect the formulae for 6 different bomb types.
Destroy 10 monster nests using bombs.
Find and free Dandelion.
Kill 50 opponents using the environment (e.g. swamp gas, insects or objects).
Resolve the doppler problem in Novigrad.
Defeat an opponent in a fistfight without taking any damage.
Find the baron's wife and daughter.
Complete the subplot involving Keira Metz.
Read 30 books, journals or other documents.
Kill at least 5 opponents in under 10 seconds.
Learn 12 potion formulae.
Complete the contract on the shrieker.
Find Yennefer of Vengerberg.
Kill 3 opponents in one fight using 3 different methods (swords, bombs, crossbow, Signs, etc.).
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.
Kill 20 cows.
Win a round of gwent with a total strength of at least 187.
Collect all available Ofieri armor and horse gear, and at least one Ofieri sword.
Kill 3 opponents with their own arrows.
Buy all the items put on the block at the Borsodis' Auction House.
Participate in all the activities at the wedding.
Be under the influence of seven potions or decoctions at the same time.
Finish the "Hearts of Stone" expansion.
Defeat all the fallen knights and loot their campsites.
Kill the prince cursed into a toad.
Slide downhill uninterrupted for at least 10 seconds.
Serve time in Toussaint.
Collect all the cards in the Skellige deck.
Obtain a flawless victory in all the competitions during the knights' tourney.
Find all grandmaster diagrams for each witcher school.
Unlock the bonus for equipping all the witcher gear elements from one School.
Be decorated with the Order of Vitis Vinifera.
Use all available options for developing Corvo Bianco.
Be given Aerondight by the Lady of the Lake.
Develop a mutation.
Travel to the Duchy of Toussaint.