Full list of all 19 Cut The Rope (Windows) achievements worth 200 gamerscore. It takes around 2-3 hours to unlock all of the achievements on Windows.
Keep the candy in the air for 30 seconds without ropes or bubbles
Cut 3 ropes at once
Collect 50 stars
Collect 150 stars
Collect 300 stars
Cut 100 ropes
Cut 800 ropes
Cut 2000 ropes
Pop 50 bubbles
Pop 300 bubbles
Outsmart 40 spiders
Outsmart 200 spiders
Let the spiders steal candy 100 times
Lose candy 50 times
Lose candy 200 times
Cut 5 ropes at once
Have Om Nom open his mouth 10 times in a row
Reunite 100 candies
Drop candy into magic hats 200 times