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