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