Yes, it is. If the part you are talking about is the Hold To Retry tutorial with the breaking bridge, step on the bridge a little, then jump, grab the bird and swing over.
Hope this helped :)
you have aced it as soon as you have finished it
You ace the collector
ace the wedding of course!!
Complete it without dying.
You ace the 'The Wedding' levels.
There's a secret sticker switch near the start which unlocks a race. When at the bit where it shows you tutorial for getting stuck don't go across the bridge instead grab the bird and fly across
Ace the story level: Boom Town
You have to ace the last level in LBP1.
You have to ace the three Savannah levels to get the full costume
You get it in DLC Celebration pack
you need to ace the wedding reception so complete it with out dieing.
To ace any level, you must complete it without dying. I would suggest looking up a walkthrough on IGN.