Here is the full list of all 21 Howlville: The Dark Past achievements.
Find the tool in the car
Enter the hotel
Get the message from your father
Find a way to descend into the abyss
Find a way out of the cafe
Activate the portal
LABORATORY_DESC
Connect the wiring
Arrange the keys correctly
Open the chest in the bedroom
Repair the winch motor
Configure the jukebox
PYSICIST_DESC
Prepare the chemical solution
Finish the retro-game
Find similar objects
Collect the code from the parts
Find the pairs
Solve the puzzle
Fix the microcircuit
Open the safe