I dont quite understand this card could someone tell me how you can kill it. If its in defense position and gets attacked, does it still go back to the owners hand since it was flipped or is it destroyed.

This is a Spirit Monster than can attack Directly, at the end of the Turn is face up it will return to the hand.

If you should attack it while its face down it and successful attack it, its destoryed and gone.

If it attacks you, can always use a trap to destory it