Thanks
Entity (called Enemy)
> Sprite
-- Entity (called leg)
> ImageSprite
-- Entity (called arm)
> ImageSprite
-- Entity
> ImageSprite
If you want to rotate the enemy, you should do
enemy.get(Sprite).rotation._ = 35;
Then the whole character should rotate.
If you want to rotate a part of it, use
leg.get(Sprite).rotation.animateTo(35, 0.5, Ease.sineOut);
You can nest entities using addChild, and components (like Sprite) using add().
The displaylist is build using entities that contain Sprites, but not plain nested Sprites like Flash.
I suggest you could take a look at my Flambe guide, some basic concepts (that can be confusing at start) are explained in it
https://github.com/markknol/flambe-guide/wiki/
Have fun, please let know if you have questions.