The Halloween Pack Add-on for Coloring Pixels has 21 achievements.
Complete all images in the Halloween Book.
Complete image 19 on the Halloween book.
Complete image 18 on the Halloween book.
Complete image 20 on the Halloween book.
Complete image 16 on the Halloween book.
Complete image 13 on the Halloween book.
Complete image 12 on the Halloween book.
Complete image 11 on the Halloween book.
Complete image 15 on the Halloween book.
Complete image 14 on the Halloween book.
Complete image 17 on the Halloween book.
Complete image 10 on the Halloween book.
Complete image 9 on the Halloween book.
Complete image 8 on the Halloween book.
Complete image 7 on the Halloween book.
Complete image 6 on the Halloween book.
Complete image 5 on the Halloween book.
Complete image 4 on the Halloween book.
Complete image 3 on the Halloween book.
Complete image 2 on the Halloween book.
Complete image 1 on the Halloween book.