Here is the full list of all 14 Cardboard Chronicles achievements.
Open the Town Gate
Collect the Bell-Piece in the Farm
Collect the Bell-Piece in the Library
Collect the Fountain Bell-Piece
Repair and Ring the Bell
Press the Button 10 times
Give Pigskin the Boot for the First time
Defeat The Beast
Double Bounce Trampoline Kid
Knock Pinky Out of the Tree
Kill All Mice in the Forest Level
Pet a Dog
Win the Limbo Competition
Collect The Cup of Legend and Give It to The Knight