Here is the full list of all 13 Bunny Puzzle achievements.
You have cleared level 300, congratulations!
You have cleared level 275, congratulations!
You have cleared level 250, congratulations!
You have cleared level 200, congratulations!
You have cleared level 225, congratulations!
You have cleared level 175, congratulations!
You have cleared level 150, congratulations!
You have cleared level 125, congratulations!
You have cleared level 100, congratulations!
You have cleared level 75, congratulations!
You have cleared level 50, congratulations!
You have cleared level 25, congratulations!
You cleared your first level, congratulations!