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.
Get the good ending.
Don't kill anybody.
Get the bad ending.
Kill everyone.
Finish the game.
Get the so-so ending.
Complete Katharine's storyline.
Save all of Katharine's cat.
Have Esmeralda arrested.
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.