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