Full list of all 56 Risen 2: Dark Waters achievements worth 1,100 gamerscore. It takes around 60-80 hours to unlock all of the achievements in the base game.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 2 DLC packs containing 6 achievements worth 100 Gamerscore.
'Four Muskets against Crow' completed
'Free Hawkins' completed
'A New Ship' completed
'Following Garcia's Trail' completed
'Chaka Datu's Legacy' completed
'Garcia's Masquerade Uncovered' completed
'The Greedy Captain' completed
'Ship's Equipment' completed
'The Gnome Eater' completed
'Build a Raft' completed
'The Cunning Captain' completed
'Steelbeard's Artefact' completed
'The Journey to the Underworld' completed
'The Split Soul' completed
'Defeat the Kraken' completed
'Kill Mara' completed
Completed 250 quests
Learned everything about blades
Learned everything about firearms
Learned everything about toughness
Learned everything about cunning
Learned everything about voodoo
At least 5 crew members on the ship
Travelled by ship 20 times
Used parrot 5 times
Used monkey 20 times
Picked 100 locks
Won duel against Severin
Acquired 100,000 gold
Collected 10 legendary items
Killed 50 sea monsters
Killed 500 monsters
Killed 2000 monsters
Learned each skill once
Acquired 300,000 gold
Dug up 50 treasures
Collected 20 legendary items
'The Titan Weapon' completed
'The Ancestors' Blessing' completed
Killed 10 giant crabs
Killed 20 ambient animals
'Become a Pirate' completed
Drank first rum
Found first treasure in the game
Won drinking duel mini-game 10 times
Hit 10 times in one game in the shooting mini-game
'Find Steelbeard' completed
Acquired 1000 gold
Killed 10 monsters
'Rescue Patty!' completed
Opened every deadly chest once
Killed all alligators on Treasure Isle
Set course for Treasure Isle for the first time
'The Air Temple' completed
'The Marooned Sailor' completed
Killed all gargoyles and gave their eggs to Eldric