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