Plot Instance Chapter 1: Sakura 5*
Plot Instance Chapter 2: Haku 30*
Plot Instance Chapter 3: Kankuro 30*
Plot Instance Chapter 4: Anko 30*
Plot Instance Chapter 5: Kimimaro 30*
Plot Instance Chapter 6: Suigetsu 30*
Plot Instance Chapter 7: Tsunade 80*
Plot Instance Chapter 8: Tobi 80*
Plot Instance Chapter 9: Gakido 80*

No Orochimaru K.T. so that means the one who told you that is lying ;P

Got him when I cleared the Conspiracy in the Dark Instance, although can't recall what level I was back then ;P