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