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