I just unlocked a quest named "duviri paradox" and now I'm on a new separate game mode with a guy with swords? I'm kind of confused, was this part of an expansion or something? Will I get anything for the main game if I complete this quest?

was listening again to the final shape ost and realised even though I liked the campaign more than lightfall, it has a worse soundtrack
the best track is probably "stronger together" which is just a mashup of older tracks lmao
https://www.youtube.com/watch?v=WSUk858pyZ8