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