The ending was so shit. The white kampfers were pretty much useless story elements. Here's how the interactions go.
WHITE KAMPFERS: WE'RE HERE TO KILL YOU.
MC AND GANG: NO
WHITE KAMPFERS AND MC AND GANG FIGHT
WHITE KAMPFERS: I GUESS WE'LL JUST FUCKING LEAVE?
Repeat the above element 6-9 times throughout the story.
As for the actual plot, it's fucking garbage. The characters are all fucking retarded as well.
Oh, so I just got this super power and someone wants me to kill other people?
I GUESS I'LL JUST LISTEN AND DO AS I'M TOLD, NO QUESTIONS ASKED, CAUSE WHY NOT?