How many difficulty levels are there in ninja gaiden 2?

Ninja Gaiden 2 is both on Xbox 360 and PS3 (as Ninja Gaiden Sigma 2) as well as having a PS Vita version.

Here are the difficulty levels, the ones with a * means it's not avaliable on the 360 version:

-*Hero/Ninja Dog=Easy (for noobs, it's impossible for you to die on this one. Enemies have less health and dumb),

-Acolyte=normal (Standard),

-Warrior=hard (Enemies have more health but they attack more often),

-Mentor=very hard (Again enemies have more health, attack more often, and you take more damage. They tend to block more.)

-Master ninja=punishing (list as such in the Vita Version, finally more healthm more block and... you know what i mean.)

-*Ultimate Ninja=this is suicide! (Enemies going blocking happy! Few hit and you're dead!)

I hope you like the answer.