AS2 rotating tile based 2D platformer

I doing a tile based 2D platformer as my project for the course. And I wanted to implement something like “The Adventures of Shuggy” which the player able to rotate the whole level in 90 degree. I had already done my tile based engine in AS2 and I had tried rotating the movieclip that hold the game level but it just gone crazy. Can anyone help please? Many thanks