AB 2 – Achievements GC

Hello everybody,I wanted to know, for the players iOs, if one of you have already made a success of the achievement "Perfect Run", which consists in making one five room stage with a single bird by room.If yes, in what level ? And in what conception ? The structures of the same level their number of variants change, but seems defined. Did you use a technique ? If we use a spell, does the achievement free all the same ?If you need help for other acheievements, you can post here.Thank you in advance.