Here is the full list of all 16 Greyfox RPG achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Get the bad ending.
Kill everyone.
Commit two acts of theft.
Knock down and eat a coconut.
Get the so-so ending.
Save all of Katharine's cat.
Finish the game.
Get the good ending.
Don't kill anybody.
Complete Katharine's storyline.
Have Esmeralda arrested.
Complete Mr. Brown's storyline.
Complete Mabel's storyline.
Have tea bags dumped on you.
Complete the nurse's storyline.
Clean up all the dog poop.