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