Crusader Kings III has 88 achievements worth 1435 gamerscore

Hook, Line & Sinker 0 Gain different hooks	5
The Gift of Life 0 Have a new child	5
The Last to Fall are the Buildings 0 Construct a new building	5
Upgrade to Match Your Destiny 0 Upgrade an existing building	5
Until Death Do Us Part 0 Marry another character	5
Lifestyle Choices 0 Choose a Lifestyle and apply a Lifestyle Perk	5
Military Matters 0 Create and upgrade a Men-At-Arms Regiment	5
A Council for Kings 0 Replace a Council Member	5
Inheritance 0 Pass on an inheritable trait to a child	5
Knowledge Itself is Power 0 Start a scheme, find a secret, use a hook	5
The Darkness that Surrounds Us 0 Assassinate any character	5
Claim Your Power 0 Fabricate a claim	5
The Art Of War 0 Progress through the stages of war	5
Bravery is Half the Victory 0 Initiate and successfully form an alliance	5
A Well Educated Mind 0 Appoint a Guardian to one of your children	5
To Command is to Serve 0 Appoint a new Military Commander	5
Death Did Us Part 0 Murder your Spouse	5
It's not a Cult! 0 Create a Faith	10
A Royal Makeover 0 Use the Barbershop to change your appearance	5
Above God 0 Gain a Strong Hook on your Head of Faith	10
A House of My Own​ 0 Create a Cadet Branch of your Dynasty	10
Almost There 0 As Álmos Árpád, form Hungary and convert to Catholicism	10
Dreadful Ruler 0 Gain the maximum amount of Dread	10
Fine Print 0 Use a hook to modify a Feudal Contract	10
Moving up in the World 0 Increase your Rank	10
Not So Feudal System 0 Use the Claim Throne Scheme successfully	10
Seductive 0 As any Character, successfully Seduce 10 people	10
Stressful Situation 0 Suffer from a Mental Breakdown	10
The Emerald Isle 0 Starting as an Irish ruler, form the Kingdom of Ireland	10
The Succession is Safe 0 Have 10 living children	10
The Things We Do for Love 0 Murder your lover's spouse​	10
Turning to Diamonds 0 Reach the highest possible stress level	10
Way of Life 0 Obtain every perk in a Lifestyle	10
Black Widow 0 Assassinate someone after seducing them	10
Mid Life Crisis 0 Complete any skill tree and then reset your perk points	15
A Legacy to Last the Ages 0 Complete an entire Dynasty Legacy path	15
An Unfortunate Accident 0 Inherit a title from someone you Murdered​	15
Bad Blood 0 Go to war with one of your siblings over a Claim	15
Celebrity 0 Reach the highest possible Level of Fame	15
Followed by Shadows 0 Know 10 Secrets simultaneously	15
For the Faith! 0 Take part in a successful Great Holy War	15
Frankokratia 0 Completely Control the Kingdom of Thessalonika	15
20/20 Council 0 All Council Members have relevant skill levels of 20 or higher (excludes spouse)	15
Know Your Place 0 Defeat a Faction in War	15
Land of the Rus 0 Start as Rurik the Troublemaker, 867. Lead your Dynasty to rule the Russian Empire	15
Monumental 0 Fully upgrade a Duchy Building anywhere in your personal Domain	15
Non Nobis Domine 0 Found a Holy Order	15
Norman Yoke 0 As Duke William of Normandy in 1066, subjugate England	15
Royal Dignity 0 As Duke Vratislav Přemyslid of Bohemia, 1066, rule Bohemia & the Holy Roman Empire	15
Saint 0 Reach the highest possible Level of Devotion (max Piety)	15
Seven Holy Cities 0 Own or become the Liege of all seven Hindu Holy Sites	15
The Emperor's New Clothes 0 While holding any Empire Title, be naked	20
Trapped in the Web 0 Have strong hooks on three Direct Vassals	20
A Name Known Throughout the World 0 Reach the highest possible Level of Splendor for your Dynasty	20
Al-Andalus 0 Take the 'Avenge the Battle of Tours' decision and completely control Iberia	20
Beacon of Progress 0 Unlock all Innovations (excluding regional and culture-specific innovations)	20
Kings to the Seventh Generation 0 As Count Eudes Robertine of Anjou, 867, your Dynasty rules the Kingdom of France	20
Last Count, First King 0 As Duke Nuño of Portucale in 1066, form Portugal	20
End of an Era 0 Play until 1453	20
Paragon of Virtue 0 Have three or more Virtuous Traits	20
Prolific 0 Have 100 living Dynasty members​	20
Reconquista 0 Convert all of Iberia to Christianity	25
Power Corrupts 0 Use a hook to help you win an Election	20
Mother of Us All 0 As Daurama Daura of Kano, 867, reform a pagan faith & convert all local Counties	50
Rise from the Ashes 0 Restore the Roman Empire	50
What Nepotism? 0 Have your Dynasty rule 10 sovereign realms of at least Kingdom tier simultaneously	50
Completionist 0 Complete all achievements	100

Crusader Kings III - Northern Lords

There are 7 achievements with a total of 150 points.

A Dangerous Business 0 As a dwarf, win a Varangian Adventurer war anywhere outside of Europe.	10
Far From Home 0 As a Norse-Asatru ruler, have your capital on any island in the Indian Ocean.	15
Vladimir's Second Choice 0 As a North Germanic Asatruan, convert yourself and all of Russia to Islam.	15
Canute the Greater 0 As an unreformed tribal, form the North Sea Empire.	20
Faster than the Fox 0 As a Norse tribal, control the entirety of Sicily before 1047.	20
Miklagarðaríki 0 As an Asatru, hold the kingdom of Thessalonika with a title other than Byzantium.	20
King of all the Isles 0 As a North Germanic Asatruan, control all Atlantic and Mediterranean islands.	50

Crusader Kings III - Royal Court

There are 7 achievements with a total of 140 points.

Changing Course 0 Create a Divergent Culture	10
Converging Paths 0 Create a Hybrid Culture	10
Crème de la Crème 0 Reach the maximum amount of Court Grandeur.	15
One of a Kind 0 Obtain a mythological rarity artifact from an Adventurer Inspiration.	15
Bod Chen Po 0 As a member of the Pugyel Dynasty, re-create the Empire of Tibet.	20
Turkish Eagle 0 As the Seljuk Count in Samosata, own Rum and a Hybrid culture of Oghuz and Greek.	20
Lingua Franca 0 Have every Royal Court speak your Court Language	50

Crusader Kings III - Fate of Iberia

There are 7 achievements with a total of 145 points.

Basque In My Glory 0 Embrace the Basque paganism faith during the Iberian struggle.	10
Iberian Compromise 0 End the Iberian struggle through compromise.	15
Iberian Conciliation 0 End the Iberian struggle by setting your differences aside.	15
Iberian Hostilities 0 End the Iberian struggle through means of force.	15
Holidaying in Iberia 0 Start as an uninvolved character, become involved and end the Iberian struggle.	20
The Andalusian Inquisition 0 Convert all of Iberia to the Mozarabic faith.	20
Legacy of The Campeadores 0 Create and rule the kingdom of Valencia as an heir to El Cid	50