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