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