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