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