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