Here is the full list of all 20 Microsoft Jigsaw (Windows) achievements worth 1,000 gamerscore.
Created a custom puzzle and exported it
Completed 15 Medium puzzles in Classic Jigsaw
Completed a puzzle in Classic Jigsaw at Expert difficulty in less than 60 minutes
Completed an Expert Classic Jigsaw puzzle by finishing the interior before attaching the edge pieces
Completed 10 Easy puzzles in Classic Jigsaw
Completed a Jigsaw Jam pack with 3 minutes or more to spare on the clock
Completed the first pack of Jigsaw Jam
Unlocked a puzzle in Classic Jigsaw
Played your first Daily Challenge
Unlock all the puzzles in the Food Collection
Earn all 6 difficulty stars on any 10 Classic Jigsaw puzzles
Achieve a score of more than 50,000 in a single Jam Pack
Complete 25 Expert puzzles in Classic Jigsaw
Complete 2 Collections in Jigsaw Jam
Complete 20 Hard puzzles in Classic Jigsaw
Get 3 stars in every pack of the first two Jigsaw Jam collections
Complete Jigsaw Jam Pack 2-6 without breaking an Accuracy Chain
Win 12 bronze Daily Challenge badges
Win 10 silver Daily Challenge badges
Win 8 gold Daily Challenge badges