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.
Knock down and eat a coconut.
Get the good ending.
Don't kill anybody.
Have Esmeralda arrested.
Finish the game.
Get the so-so ending.
Complete Mr. Brown's storyline.
Complete Katharine's storyline.
Save all of Katharine's cat.
Complete Mabel's storyline.
Have tea bags dumped on you.
Complete the nurse's storyline.
Commit two acts of theft.
Clean up all the dog poop.