Full list of all 30 The Darkside Detective: A Fumble in the Dark achievements. It takes around 8-10 hours to unlock all of the achievements in the base game.
The base game contains 23 achievements, and there are 3 DLC packs containing 7 achievements.
Poke McQueen 50 times.
You found the pop-up image in each case.
Listen to all Inhuman League tracks.
You helped find true love.
Wait... Did you teach him a trick or did he just trick you?
Drain Nanny's supply of sandwiches and tea.
Ask the masters for their worldly wisdom.
Credits watched, Division reinstated.
Completed Case 6: Class of the Titans
Dooley's a cool cat.
Completed Case 5: Royal Fumble
You pet all the animals in the game.
You ruined the demon's downtime.
You found all the flashbacks of Dooley's darkside adventures.
You spotted what Gary was up to on the switchboard roof.
Completed Case 4: Funfair Dismissal
You interrupted a scary yet romantic dinner.
You broke the clown car.
Completed Case 3: Druid's Delight
You discovered the well's secret...
Completed Case 1: Missing, Presumed Darkside
Completed Case 2: Twilight Years
You examined all of Nanny Dooley's stash.
Complete Case 9: Tales from the Darkside.