Is it for power? Or status? Or is it just a game? Kallen is as clueless as always. It is almost as if she does not know Lelouch at all, which is what she seems to believe.

The goal for Lelouch becoming the "emperor of massacres" is not to overshadow the deeds of Euphy. That is merely a coincidental result of what he is really trying to achieve. It probably involves a direct confrontation against Schneizel and whatever his plan is.

Aside from that, I think Lelouch is planning to make himself the world dictator, only to be taken down by the world so that everything can begin at zero (zero requiem). This makes sense from Lelouch and Suzaku's psychological perspectives since they both believe they deserve punishment, and are willing to sacrifice a lot of blood, including theirs, to get that result (as Lelouch said to Kaguya in the episode).

I am actually surprised people ever doubted Schneizel was going to be a villain. I know he is likable, but from his very first appearance, he was exuding final antagonist vibes, especially with how he handled Cornelia in S1. There is nothing wrong with liking a villain anyway.

I doubt Schenizel is going to screw up too much. It will probably go against Lelouch until some turning point near the end.

And... when will we find out about C.C.'s name?