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