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