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