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