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