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