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