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