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