I only finished the tutorial with *Samhain* just last night, so it would have had to have been Thanatos. But I don't recall ever attacking him, unless I was tired and not paying attention to names.. And I really doubt that I would have since I would lose roughly 12 honor for doing so..
I dunno about the exploring points. It's the same way for me. As for the vital energy, refreshing the page (logging out and back in) fixes that little problem. I don't think vital points/value points max updates are shown until your next log in.