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