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