You need to keep Kyrie from being hit for a minute and a half during the ending cut-scene. The "secret" ending is nothing special. Just Tube it in HD.
^Thats it?
Just one question - When battling 'Savior' I nearly brought him down and he was left with a small fraction of health but at the end he just went berserk and I found it very difficult to get close to him. Kept dodging and when I tried to hit him with the sword it just bounced off. At the end it somehow connected and got through.
Is there an easier way to take him out?
Lost a number of green orbs at the end as well but now I know what to do.