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