The Petit GLASS Add-on for GLASS has 16 achievements.
Petit Iris Puzzle Stage 1 Clear
100% Petit Iris Puzzle
Petit Iris Puzzle 200%
Open Petit Iris Gallery
Achieve all achievements of Petit Iris
Petit Michelle puzzle stage 1 clear
100% Petit Michel Puzzle
Petit Michel Puzzle 200%
Open Petit Michelle Gallery
Achieve all achievements for Petit Michelle
Petite Renky Puzzle Stage 1 Clear
100% Petit Renky Puzzle
Petite Renky Puzzle 200%
Petite Renky Gallery Open
Achieve all Petit Renki achievements
Achieve all Petit achievements