What do you mean? That was one of the easiest boss battles in any game I've ever played. Unless you meant the cut scenes and codec leading to it. There were at least 2 occasions where my controller turned off due to inactivity during cut scenes.
I suppose all the revelations leading up to the fight didnt help anything. (Everything post RAY fight was just...way too much.) I wouldnt say it was too difficult, i beat it on my fifth or sixth try, but the controls definitely didnt make me feel like a bad ass ninja fighting on a roof. It makes sense that KP couldnt make en entire game out of this mechanic. I was mostly just venting my frustration.
That's actually the easiest fight on extreme. That's the relief after the shit with the twenty Metal Gear RAY units.
I can only imagine.