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