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