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