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