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