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