Here is the full list of all 50 Risen 3 - Titan Lords achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Acquired 100 attribute points in Magic
Acquired 100 attribute points in Dexterity
Acquired 100 attribute points in Ranged
Acquired 100 attribute points in Spirit
Acquired 100 attribute points in Influence
Acquired 100 attribute points in Cunning
Acquired 100 attribute points in Melee
Destroyed your soul rating until it was under 10
Completed 'Zak's Temptation'
Completed 'The Ancient Covenant'
Completed 'Cold Nights'
Completed 'The Swearing-in Ceremony'
Acquired 300,000 gold
Completed 'Minions' Weapon Store'
Used the monkey 20 times
Completed 'Death Incarnate'
Won the Knife-throwing mini game 10 times
Acquired 100 attribute points in Toughness
Completed 'The Reactor'
Picked 100 locks
Completed 'The Oracle's Soldiers'
Killed 2000 monsters
Completed 'Green Flames'
Acquired 100,000 gold
Dug up 10 treasures
Travelled by ship 20 times
Killed 50 Shadow Creatures
Won the Arm-wrestling mini game 10 times
Completed 'The Missing Gnome'
Completed 300 quests
Collected 10 legendary items
Raised your soul rating until it is over 90
Won the Drinking mini game 10 times
Got at least 7 crew members on the ship
Completed 'Booze's Befuddled Mind'
Completed 'The Kiss of the Dead'
Completed 'Water Source Conflict'
Used the parrot 10 times
Completed 'The Blue Flower'
Killed 500 monsters
Completed 'Menacing Shadows'
Completed 'A Follower of Magic'
Killed 20 innocent animals
Completed 'Chaos in Harbour Town'
Completed 'Let's Get Out of Here'
Killed 10 Scavengers
Acquired 1000 gold
Found the first treasure in the game
Killed 10 monsters
Healed for the first time