Here is the full list of all 20 The Bunny Graveyard achievements.
You said NO multiple times to Skye
You tried shutting down the computer.
Beat Handle Banks without getting knocked out
Beat Hand SIght without getting knocked out
Beat Finger Taker without getting knocked out
You lied to Ben
You told the truth to Ben
You failed at gardening, multiple times.
Get 15 points in 90 seconds or less
Beat Stewart without getting hit
You opened the door to the mysterious room.
Catch more than 30 fish
You found all of the maps in the labyrinth
You found a note buried in the garden
Beat Chapter 1
You chose Boxers as your fighter name
You said NO multiple times to Boxers
You found the secret credits scene.
You found all the clues in Chapter 1
Get through the portal without getting hit