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