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