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