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