Here is the full list of all 44 Darkestville Castle achievements.
Talk through every dialogue option with Fly.
Have a look at every demon in Darkestville.
Finish The Game.
Run into Vigo for three times.
Finish The Third Chapter.
Find a message from Cid’s parents and get the detonator.
Find a secret entrance at the Lavafall.
Buy video recorder back.
Try every drink at the bar and find 3 diamonds.
Summon the ghost and talk through every dialogue option with him.
Read the whole book about ghosts.
Build a bridge over the Lavafall.
Meet Alberto.
Read the Survivalist Magazine.
Finish The Interlude.
Solve the Underworld Gateway puzzle.
Try all possible Underworld Gateway password combinations.
Finish The Second Chapter.
Fulfil every strike demand of Pig Demon.
Cure both Mongoose and Walrus.
Get Walrus his coffee.
Talk with Giovanny in the Tavern about T.Rex.
Win at dice with sugar cubes.
Get a tomato and talk through every dialogue option with Vegetable Demon.
Talk through every dialogue option with Werewolf by the tavern.
Talk with Sailor Demon about his… ship and find a way to get it from him.
Talk with Pig Demon about joining Demon Trade Union.
Talk with Jeff about Good stuff.
Get out of the castle cell.
Finish The First Chapter.
Get all 3 keys.
Try to flirt with Foxy.
Ask all three of Romero brothers about Dan.
Give some sedative to Walrus.
Get the second key.
Have a look at every tombstone in Darkestville.
Have a look at every single person in Darkestville.
Poke around in every trashcan in Darkestville.
Try to find a secret safe behind every picture in Darkestville.
Read the whole biology textbook.
Finish the prelude.
Fix the broken machine in the basement.
Talk through every dialogue option with Dan.
Use the hint option for a fist time.