What are the Fuel Cells used for in Metal Gear Rising? I see it under my health bar and I see it deplete but I don't know it's purpose. I'm also new to the series.
What is a sure (or good) way to get a zandatsu on a gekko? I am playing on a PS3 but a XBoX solution would be as well.
Is there a way to change the difficulty level in Metal Gear Rising? I looked through the options screen but didn't see anything that looked like a difficulty setting.