Here is the full list of all 33 Shady Brook - there are A Dark Mystery Text Adventure achievements.
Bug someone repeatedly.
Unpack your suitcase.
Search through someone's medicine cabinet.
Experience an unwelcome break-in.
Find the way to Chief's cabin.
Talk sports with some friends.
Spy on an intimate moment.
Find evidence of an affair.
Find out what's on TV.
Do some laundry.
Successfully navigate the mountains at night.
When you're in over your head, call the police.
Properly adjust three mirrors.
Replace a muffler.
Win a round of Rock, Paper, Scissors.
Beat someone in a game of 8-Ball.
Don't forget to visit your father on occassion.
Make a difficult choice for love.
Trade a watch for some useful information.
Prowl the town at midnight.
Enter a series of underground passages.
Examine a stone etching.
Witness something deeply disturbing.
Hear the last words of the deceased.
Discover some unsettling evidence.
Break out of jail.
Find the source of a bad stench.
Beat up two bullies!
Complete the game.
Achieve a final score of at least 1000.
Catch a fresh fish for a special occasion.
Use no hints
Cross a moral line.