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.
Learned each skill once
Travelled by ship 20 times
'The Ancestors' Blessing' completed
Picked 100 locks
Killed 20 ambient animals
Won drinking duel mini-game 10 times
Killed 50 sea monsters
Dug up 50 treasures
Completed 250 quests
Used monkey 20 times
Killed 2000 monsters
Killed 500 monsters
Acquired 100,000 gold
Acquired 300,000 gold
'Kill Mara' completed
'Defeat the Kraken' completed
'The Split Soul' completed
'The Journey to the Underworld' completed
Collected 20 legendary items
'The Cunning Captain' completed
'Build a Raft' completed
'The Gnome Eater' completed
'Ship's Equipment' completed
'Steelbeard's Artefact' completed
'The Greedy Captain' completed
'Garcia's Masquerade Uncovered' completed
'Chaka Datu's Legacy' completed
'Following Garcia's Trail' completed
At least 5 crew members on the ship
Collected 10 legendary items
'A New Ship' completed
'The Titan Weapon' completed
'Four Muskets against Crow' completed
'Free Hawkins' completed
Killed 10 giant crabs
Drank first rum
'Become a Pirate' completed
Found first treasure in the game
'Find Steelbeard' completed
Killed 10 monsters
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