Thanks for playing!
The persona fight is a one time story encounter outside the normal gameplay loop, it has special rules so there isn't really a wrong way to do it.
The prologue you skipped is basically just a hallway that tells you how to run/jump/shoot and what the different resource bars on the HUD mean, some unfinished story content, and then a tutorial on how to upgrade Nxia and unlock abilities. The animated screenshots are from the 4th boss fight "Cobalt".
Voice acting definitely on the todo, but probably gonna be one of the last things that get added, since the story content isn't done yet. ^_^