This is super well done! The manual is a great touch as well, the polish is out of this world.
My one critique: I'm not a fan of powerups being tied to score though. Since friends are reset with each death, dying ruins both your score multiplier and your ability to quickly generate powerups. This makes death a punishment both for score attacking players and players just trying to survive. Might just be a difference in philosophy, but I really don't like my chances of survival feeling ruined by a single mistake. Even with the life system, a single death feels like a ruined run, which isn't a great feeling.