There are 52 achievements with a total of 1000 points.

Passed the Trial 0 Finish the game on any difficulty.	15
Ran the Gauntlet 0 Finish the game on the "Blood and Broken Bones!" or "Death March!" difficulty levels.	30
Walked the Path 0 Finish the game on the "Death March!" difficulty level.	65
Geralt: The Professional 0 Complete all witcher contracts.	15
Dendrologist 0 Acquire all the Abilities in one tree.	15
The Enemy of My Enemy 0 Use the Axii Sign to force one opponent to kill another. Do this 20 times.	15
Humpty Dumpty 0 Kill 10 opponents by knocking them off somewhere high with the Aard Sign.	15
Environmentally Unfriendly 0 Kill 50 opponents using the environment (e.g. swamp gas, insects or objects).	15
Kaer Morhen Trained 0 Perform 10 effective counterattacks in a row without getting hit or parrying.	15
Can't Touch This! 0 Kill 5 foes in a fight without taking damage (except for Toxicity) and without using the Quen Sign.	15
That Is the Evilest Thing 0 Ignite the gas produced by a Dragon's Dream bomb using a burning opponent. Do this 10 times.	15
Butcher of Blaviken 0 Kill at least 5 opponents in under 10 seconds.	30
Brawler 0 Defeat Olaf, the Skellige champion of unarmed combat.	30
Overkill 0 Make an opponent suffer from bleeding, poisoning and burning simultaneously. Do this 10 times.	30
Master Marksman 0 Kill 50 human and nonhuman opponents by striking them in the head with a crossbow bolt.	15
Globetrotter 0 Discover 100 fast travel points.	15
Pest Control 0 Destroy all monster nests in the Velen / Novigrad region, or in Skellige.	30
Card Collector 0 Acquire all gwent cards available in the base version of the game.	15
Gwent Master 0 Defeat Tybalt and win the gwent tournament held at the Passiflora.	15
Let's Cook! 0 Learn 12 potion formulae.	15
Bombardier 0 Collect the formulae for 6 different bomb types.	15
Bookworm 0 Read 30 books, journals or other documents.	15
Armed and Dangerous 0 Find and equip all the elements of one set of witcher gear.	30
Power Overwhelming 0 Have all possible Place of Power bonuses active at the same time.	15
Brawl Master 0 Complete all fistfighting quests in Velen, Skellige and Novigrad.	15
Fast and Furious 0 Win all the horse races in the game.	15
Munchkin 0 Reach character development level 35.	65
Fire in the Hole 0 Destroy 10 monster nests using bombs.	15
Fist of the South Star 0 Defeat an opponent in a fistfight without taking any damage.	15
Geralt and Friends 0 Win a round of gwent using only neutral cards.	15
All In 0 Play three hero cards in one round of gwent and win the match.	15
Even Odds 0 Kill 2 monsters you have a contract on without using Signs, potions, mutagens, oils or bombs.	30
Mutant 0 Fill all mutagen slots.	15

Secret Achievements

Lilac and Gooseberries 0 Find Yennefer of Vengerberg.	15
A Friend in Need 0 Find and free Dandelion.	15
Necromancer 0 Help Yennefer extract information from Skjall's body.	15
Family Counselor 0 Find the baron's wife and daughter.	15
Something More 0 Find Ciri.	15
Xenonaut 0 Visit Tir ná Lia and convince Ge'els to betray Eredin.	15
The King is Dead 0 Defeat Eredin.	30
Kingmaker 0 Complete the subplot about choosing Skellige's ruler.	15
Assassin of Kings 0 Take part in the assassination of King Radovid.	15
Friends With Benefits 0 Complete the subplot involving Keira Metz.	15
Full Crew 0 Bring all possible allies to Kaer Morhen for the battle against the Hunt.	15
Triple Threat 0 Kill 3 opponents in one fight using 3 different methods (swords, bombs, crossbow, Signs, etc.).	15
What Was That? 0 Attack, counter, cast a Sign and throw a bomb (in any order) in under 4 seconds.	15
Shrieker 0 Complete the contract on the shrieker.	15
Fearless Vampire Slayer 0 Complete the contract on Sarasti.	15
Woodland Spirit 0 Complete the contract on the Woodland Spirit.	15
Fiend or Foe? 0 Complete the contract on Morvudd.	15
Ashes to Ashes 0 Complete the contract on Therazane.	15
The Doppler Effect 0 Resolve the doppler problem in Novigrad.	15

The Witcher 3: Wild Hunt - Hearts of Stone

There are 13 achievements with a total of 500 points.

Return to Sender 0 Kill 3 opponents with their own arrows.	35
Can Quit Anytime I Want 0 Be under the influence of seven potions or decoctions at the same time.	35
Wild Rose Dethorned 0 Defeat all the fallen knights and loot their campsites.	35
I Wore Ofieri Before It Was Cool 0 Collect all available Ofieri armor and horse gear, and at least one Ofieri sword.	50
Killed It 0 Win a round of gwent with a total strength of at least 187.	50

Secret Achievements

I'm Not Kissing That 0 Kill the prince cursed into a toad.	35
Let the Good Times Roll! 0 Participate in all the activities at the wedding.	35
Shopaholic 0 Buy all the items put on the block at the Borsodis' Auction House.	35
Curator of Nightmares 0 Recreate all of Iris' nightmares in the Painted World.	35
Pacta Sunt Servanda 0 Finish the "Hearts of Stone" expansion.	35
When It's Many Against One… 0 Provoke all Iris von Everec's Nightmares into fighting you at the same time and defeat them.	50
Moo-rderer 0 Kill 20 cows.	35
Rad Steez, Bro! 0 Slide downhill uninterrupted for at least 10 seconds.	35

The Witcher 3: Wild Hunt - Blood and Wine

There are 13 achievements with a total of 500 points.

The Witcher's Gone South 0 Travel to the Duchy of Toussaint.	35
Last Action Hero 0 Be decorated with the Order of Vitis Vinifera.	35
Kling of the Clink 0 Serve time in Toussaint.	35
A Knight to Remember 0 Obtain a flawless victory in all the competitions during the knights' tourney.	35
Embodiment of the Five Virtues 0 Be given Aerondight by the Lady of the Lake.	35
Playing House 0 Use all available options for developing Corvo Bianco.	35
Turned Every Stone 0 Find all grandmaster diagrams for each witcher school.	50
I Have a Gwent Problem 0 Collect all the cards in the Skellige deck.	50
Dressed to Kill 0 Unlock the bonus for equipping all the witcher gear elements from one School.	35
Weapon "W" 0 Develop a mutation.	35

Secret Achievements

The Grapes of Wrath Stomped 0 Help unite the warring vineyards and have a wine named in your honor.	35
Hasta la Vista™ 0 Kill a frozen opponent with a crossbow bolt.	50
David and Golyat 0 Kill Golyat with a crossbow bolt to his eye.	35