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