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