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