The Halloween 2 Add-on for Pixel Puzzles Ultimate Jigsaw has 21 achievements.
Complete Puzzle: Witch
Complete Puzzle: Ghosts
Complete Puzzle: Skeleton
Complete Puzzle: Polar Bear
Complete Puzzle: Cat And Owl
Complete Puzzle: Web
Complete Puzzle: Masks
Complete Puzzle: Lanterns
Complete Puzzle: Moon Bats
Complete Puzzle: Black Cat
Complete Puzzle: Candy Corn
Complete Puzzle: Poison
Complete Puzzle: Warning
Complete Puzzle: Ghost Dogs
Complete Puzzle: Pumpkin
Complete Puzzle: Bat Smoke
Complete Puzzle: Conjuring
Complete Puzzle: Jack O Lantern
Complete Puzzle: Rats
Complete Puzzle: Gravestone
Complete Pack: Halloween 2