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