[2022] Lore question - end of Temple (level 25)

Hey folks.

As i entered Temple of Eterra (ruined world), someone kept talking to me, like a god or whatever. They seemed to be happy i found them, and confused me for Eterra. As i entered final room, they said "you are not eterra", and then "Eterra is dead, Oryboss is unchained" or something like that. And then i fought a giant skeleton.

I assume giant skeleton is the emperor of the immortal legion that i kept hearing about. Was he the one who was talking to me? Why was he happy to see me? Is eterra a god/goddess? Why is them dying relevant to oryboss?

If i learn all of this later, thats fine, im just worried that i missed something along the way and am confused by whats going on.

Thanks!

(BTW, any reason we dont have a question megathread? I would prefer to avoid having to make a new post every time i have a question haha)