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.
Get the bad ending.
Kill everyone.
Have Esmeralda arrested.
Commit two acts of theft.
Knock down and eat a coconut.
Save all of Katharine's cat.
Finish the game.
Get the so-so ending.
Complete Mr. Brown's storyline.
Complete the nurse's storyline.
Complete Katharine's storyline.
Complete Mabel's storyline.
Have tea bags dumped on you.
Clean up all the dog poop.