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.
Knock down and eat a coconut.
Have Esmeralda arrested.
Get the bad ending.
Get the good ending.
Don't kill anybody.
Kill everyone.
Finish the game.
Get the so-so ending.
Complete Katharine's storyline.
Save all of Katharine's cat.
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.
Commit two acts of theft.