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