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