Everyone under the sun (reviewers and consumers) declared this game extremely challenging.

I'm no uber gamer, but I'm wondering when GV becomes the challenge everyone made it out to be. I just beat the 2nd boss (the Ice boss), and so now I'm on the 3rd set of locations. I've died about 2 times since starting, and both of them were from the Ice boss I just slaughtered.

On a side note, how much of the game is left? How far am I, percentage wise??

Thanks!!!