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 Spirit
Acquired 100 attribute points in Influence
Acquired 100 attribute points in Magic
Acquired 100 attribute points in Ranged
Destroyed your soul rating until it was under 10
Killed 2000 monsters
Acquired 100 attribute points in Dexterity
Acquired 100 attribute points in Toughness
Completed 'Cold Nights'
Completed 'The Kiss of the Dead'
Completed 'The Swearing-in Ceremony'
Acquired 300,000 gold
Won the Arm-wrestling mini game 10 times
Won the Knife-throwing mini game 10 times
Won the Drinking mini game 10 times
Completed 'Death Incarnate'
Acquired 100 attribute points in Cunning
Completed 'Minions' Weapon Store'
Acquired 100 attribute points in Melee
Completed 'Green Flames'
Completed 'The Oracle's Soldiers'
Completed 'Zak's Temptation'
Acquired 100,000 gold
Raised your soul rating until it is over 90
Completed 'The Reactor'
Got at least 7 crew members on the ship
Completed 'The Ancient Covenant'
Picked 100 locks
Travelled by ship 20 times
Completed 'The Blue Flower'
Completed 'Booze's Befuddled Mind'
Completed 'Water Source Conflict'
Used the monkey 20 times
Completed 300 quests
Killed 500 monsters
Killed 50 Shadow Creatures
Dug up 10 treasures
Collected 10 legendary items
Completed 'The Missing Gnome'
Completed 'Chaos in Harbour Town'
Completed 'A Follower of Magic'
Used the parrot 10 times
Completed 'Menacing Shadows'
Killed 20 innocent animals
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