So turns out I was very, very close to the end. (And it was Eve I fought, not Adam. Confusing, never come across a man called Eve before.) After my save yesterday morning I only had the final boss fight left to do, then I completed ending A.
How many times do people play this through. I understood this game probably required three play throughs, A, B and C, but now I see people talking about playing through for ending E. Do people seriously play this game through five times? Are the forth and fifth markedly different from the third?