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