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