Angry Birds Star Wars

Not sure why this is a "secret" achievement but here is the description.


this unlocked for me after completing level 1-2 on my first try with a 3 star score, and 99% of people who have the game seem to have this one unlocked, there is a later achievement That I assume is related and will probably unlock when you collect X number of stickers for doing various tasks such as 3 starting a level.