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