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