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