Full list of all 49 Risen 2: Dark Waters achievements. It takes around 35-40 hours to unlock all of the achievements in the base game on Windows.
The base game contains 43 achievements, and there are 2 DLC packs containing 6 achievements.
Killed 2000 monsters
Learned each skill once
Killed 500 monsters
Completed 250 quests
Dug up 50 treasures
Acquired 300,000 gold
Acquired 100,000 gold
Picked 100 locks
'Kill Mara' completed
'Defeat the Kraken' completed
'The Split Soul' completed
Collected 20 legendary items
'The Journey to the Underworld' completed
'Steelbeard's Artefact' completed
'The Greedy Captain' completed
Travelled by ship 20 times
Used monkey 20 times
'Garcia's Masquerade Uncovered' completed
At least 5 crew members on the ship
'Chaka Datu's Legacy' completed
'The Cunning Captain' completed
'Build a Raft' completed
'The Gnome Eater' completed
Killed 50 sea monsters
Collected 10 legendary items
'Ship's Equipment' completed
Killed 20 ambient animals
'Following Garcia's Trail' completed
'Four Muskets against Crow' completed
Won drinking duel mini-game 10 times
Killed 10 giant crabs
'A New Ship' completed
'Free Hawkins' completed
'The Titan Weapon' completed
'The Ancestors' Blessing' completed
Drank first rum
'Become a Pirate' completed
Found first treasure in the game
Killed 10 monsters
'Find Steelbeard' completed
Acquired 1000 gold
Won duel against Severin
'Rescue Patty!' completed
Killed all gargoyles and gave their eggs to Eldric
'The Marooned Sailor' completed
'The Air Temple' completed
Opened every deadly chest once
Killed all alligators on Treasure Isle
Set course for Treasure Isle for the first time