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.
Have all possible Place of Power bonuses active at the same time.
Destroy all monster nests in the Velen / Novigrad region, or in Skellige.
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.
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.
Kill 50 human and nonhuman opponents by striking them in the head with a crossbow bolt.
Acquire all gwent cards available in the base version of the game.
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.
Finish the game on the "Death March!" difficulty level.
Reach character development level 35.
Defeat Eredin.
Acquire all the Abilities in one tree.
Complete all witcher contracts.
Take part in the assassination of King Radovid.
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.
Complete the contract on the Woodland Spirit.
Defeat Tybalt and win the gwent tournament held at the Passiflora.
Complete the contract on Sarasti.
Complete the contract on Therazane.
Fill all mutagen slots.
Find Ciri.
Kill 3 opponents in one fight using 3 different methods (swords, bombs, crossbow, Signs, etc.).
Bring all possible allies to Kaer Morhen for the battle against the Hunt.
Destroy 10 monster nests using bombs.
Complete the subplot about choosing Skellige's ruler.
Kill 50 opponents using the environment (e.g. swamp gas, insects or objects).
Resolve the doppler problem in Novigrad.
Kill 2 monsters you have a contract on without using Signs, potions, mutagens, oils or bombs.
Help Yennefer extract information from Skjall's body.
Discover 100 fast travel points.
Win all the horse races in the game.
Find and free Dandelion.
Kill at least 5 opponents in under 10 seconds.
Win a round of gwent using only neutral cards.
Complete the subplot involving Keira Metz.
Perform 10 effective counterattacks in a row without getting hit or parrying.
Find and equip all the elements of one set of witcher gear.
Find the baron's wife and daughter.
Collect the formulae for 6 different bomb types.
Complete the contract on the shrieker.
Play three hero cards in one round of gwent and win the match.
Read 30 books, journals or other documents.
Learn 12 potion formulae.
Find Yennefer of Vengerberg.
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.
Win a round of gwent with a total strength of at least 187.
Kill 3 opponents with their own arrows.
Be under the influence of seven potions or decoctions at the same time.
Kill 20 cows.
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.
Participate in all the activities at the wedding.
Buy all the items put on the block at the Borsodis' Auction House.
Kill the prince cursed into a toad.
Collect all available Ofieri armor and horse gear, and at least one Ofieri sword.
Defeat all the fallen knights and loot their campsites.
Slide downhill uninterrupted for at least 10 seconds.
Unlock the bonus for equipping all the witcher gear elements from one School.
Find all grandmaster diagrams for each witcher school.
Be decorated with the Order of Vitis Vinifera.
Serve time in Toussaint.
Develop a mutation.
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.
Collect all the cards in the Skellige deck.
Travel to the Duchy of Toussaint.