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