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 bad ending.
Kill everyone.
Finish the game.
Get the good ending.
Don't kill anybody.
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.
Knock down and eat a coconut.
Clean up all the dog poop.
Commit two acts of theft.