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