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