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