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