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Reaper's Eye

Arrive at Reaper's Eye
 

Thief

Perform a successful theft
 

Convincing

Win a persuasion event
 

Thunders of the Upper Deep

Escape the kraken's clutches
 

The Great Escape

Flee Fort Joy for good
 

Walk at Liberty

Remove your Source Collar
 

Apprentice

Use your first Source Skill
 

Spira, Spera

Arrive at the Sanctuary of Amadia
 

Gladiator

Become champion of the Fort Joy arena
 

Hero

Gain the Hero tag
 

Abound with Blessings

Face a higher power
 

A Good and Faithful Servant

Rescue Gareth from Braccus' Armoury
 

The Weird Sister

Kill Radeka

 

His Father's Son

Defeat Alexandar in Fort Joy
 

Cat's Out of the Bag!

Escort the Black Cat out of Fort Joy
 

Sails That Glance in the Sun

Take command of the Lady Vengeance
 

Runemaster

Equip runes to all of an item's available slots
 

Seascape

Escape Dallis' siege on the Lady Vengeance without killing every minion
 

Heaven's Gate

Enter the Hall of Echoes
 

A Million of Waves

Arrive at Reaper's Coast

 

Scholar of Secret Arts

Welcome Tarquin to the Seekers' service
 

Took a Great Fall

Kill an enemy using Teleportation

Get this one as soon as possible (Fort Joy) since teleport does litte to no dmg later in the game.

The Meistr

Meet Meistr Siva
 

Criminal Intent

Get caught breaking the law
 

Arcane Author

Craft a scrol
 

Bridge Over Troubled Waters

Help free Mari from the Voidwoken
 

Expert

Unlock your second Source Point slot
 

Cur of Low Degree

Kill Andras, the necromantic dog
 

Spirit Animal

Speak to an animal's spirit
The tiger you can find in the elven temple on the Nameless Isle has a spirit.

Kiss of the Spider Woman

Receive Dorotya's kiss
 

Andabata

Become champion of the Driftwood Arena
 

Masquerade

Shapeshift into every race
 

Proud Parent

Adopt Peeper
 

Master

Unlock your third Source Point slot
 

Skillcrafter

Craft a skill
 

Isle of the Gods

Learn of the Council of Seven's location from a higher power
 

Grenadier

Craft a grenade
 

Lawyer Up

Learn of the Council of Seven's location from The Advocate
 

Island Hopper

Arrive at the Nameless Isle
 

Existential Crisis

Correctly answer all of Crispin's questions
 

What's in a Name?

Awaken the corrupted Ancestor Tree on Bloodmoon Island
 

The Good Doctor

Perform successful surgery on Natalie
 

A Sheep in Wolf's Clothing

Escort Saheila outside without fighting the Lone Wolves
 

Back to School

Enter the Academy
 

Get In The Ring

Enter The Arena of the One
 

Iniquity Forgiven

Set Gareth on a path of reconciliation
 

The Wreck of the Titan

Arrive at Arx
 

Over to the Farther Coast

 

Villain

Gain the Villain tag
*you can easily get the tag by using source vampirism on corpses/spirits*

A Nest on High

Tame Featherfall
 

Gather Your Party

Successfully begin a Game Master session
 

Chosen

Convince all party members to let you ascend
 

Infiltration

Lockpick your way into Mordus' hidden lair
 

Venture Forth

Successfully begin a match in Arena Mode
 

A Song Unsung

Sebille: Kill the Master

Play as [with]Sebille[in your party]and kill the Shadow Prince that can be found at the lizard temple on the Nameless Isle.

Lair of the White Worm

Discover Reimond's Lair
 

Swashbuckler

Escape Dallis' siege on the Lady vengeance after killing every minion
 

Serious Academic

Discover the hidden entrance to the academy
 

Death in the Pot

Serve Garvan the tainted stew
 

Doctor: Heal Thyself

Defeat Adramahlihk
 

The Back Door

Gain entrance to Lucian's Crypt without following the Path of Blood
 

Dragonslayer

Kill Slane
 

The Abysmal Sea

Defeated the Kraken
 

Sourcerer

Complete the game in Explorer Mode
 

All-Father, Life-Shaper

become the father of dragonlings
???

Toy Story

Persuade Toyseller Sanders to give you his amulet
 

Risen

Ascend to Divinity

*tip*-make a save when the dialogue pops up to get all achievements for the end[in the fight]-

Cat Person

Rescue Arhu
 

Godwoken

Complete the game in Classic Mode
 

An Apple a Day

Banish your demon
 

Anathema

Obtain Anathema
 

One For All

Share Source with all of Rivellon
*tip*-make a save when the dialogue pops up to get all achievements for the end[In the fight]-

The Seven Altars

Pray at every altar on the Nameless Isle

*Make sure that you do this BEFORE killing Alexander or the Sallow Man -Learning The Alignments of the gods-

else the alters prayed at afterwards won't be counted toward the achievement*

Supreme Sacrifice

Purge Rivellon of all Source
*tip*-make a save when the dialogue pops up to get all achievements for the end[In the fight]-

A Dream Undone

Kill the Red Princess
 

Furious Rebuke

Set Gareth on a path of vengeance
 

Favoured Son

Convince Alexander to ally with you
 

Return of the King

Submit to the God King
Fane can help with this I assume, but all that is required for the achievement is for you to not acsend to divinity at the last boss fight when the dialogue pops up *tip*-make a save when the dialogue pops up to get all achievements for the end[In the fight]-

Hammered

Force Dallis to retreat from the combat in Fort Joy
 

The Promise

Swear to the Covenant
 

 

Curse Thine Enemies

Use the Curse skill

 

Divine

Complete the game in Tactician Mode
 

Deal with the Devil

Make a dead with the Doctor to ascend with you while playing as Lohse.

Puritan's Walk

Successfully walk the Path of Blood

*you need the locket and scroll from sanders*

*if you kill sanders there is a lootable note on him that tells you the name to write on the enchanted parchment upstairs*

The Isle of Last Resort

Learn of the Council of Seven’s location from Malady
 

A Wolf Avenged

Kill Lucian
 

Eternal Salvation

Return the Eternals to Rivellon
Play as Fane and become Divine.

Technical Eggstacy

Destroy every Voidwoken egg in Reaper's Cove
 

Angel and Demon

Ascend to divinity after you made a deal with the Doctor.

Fool Me Once

Forgive Lucian
Play as Ifan and sacrifice your source at the end of the game.

The Adventure Begins...

Embrace this strange new world
Play as Fane and sacrifice your source at the end of the game.

Demon's Embrace

Embrace your demon

Play Lohse as your main character, choose dialog options with the Doctor that coincide with the achievement.

For Honour

Complete the game in Honour Mode
Completing the game on any difficulty will unlock the achievements for all easier difficulties

Liberator

Seems bugged.

Royalty

Ally with the Queen
Seems bugged.

Regicide

Assassinate the Queen
Kill Queen Justinia in the sewers while having Beast in your party.

Stay Grounded

Seems bugged.