Oh Dear Lord O.O *bad times*
You have to defeat each Character Bad Side and Relive the Good side
Errr, The way I did it was . . I went online and Got a map of it and I drew It, And Every time I did a person I would Circle them, It was Easyer But still quite Hard
If you CBA or Can't draw, I'll send you the link to the map that I copied, it gives you The paths of Which Each door goes, tell you where the Bosses and So on . .
link