ThoughtsOfSpeaking
Banned
I'm pretty sure the Night Club is Mission 13. Since bosses are their own mission, that would mean we've seen up to Mission 14.
That would make sense as
The demon baby would be the next missions fight, then a mission to serve as a bit of exposition before mundus, then the giant mundus fight, then another mission to get to kat, then the vergil heel turn, and a final escort mission to get kat out of hell
Pure speculation, but thats close enough to how I think this game will play out. Its not exactly multilayered writing.