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