Peter sat on the cold concrete floor shivering and looking all shrivelled up and unkept. This was the aftereffects of berserk. He increased his stats more than ten folds, but for a whole week he was going to be in the worst physical conditions. In as much as he hated using this ability, he couldn't abandon his duties as a purifier. He had ran into a group of Guilds bagging two unconscious civilians at night, and he had immediately engaged them.
He was heavily outnumbered and in outmatched while still in his base form and that wasn't going to be enough if he wanted to save those people. The reason he hadn't started off with berserk immediately was because Hollister was nowhere near the area. He knew how dangerous he becomes while using this ability, and without Hollister around to cancel the power anytime he went overboard, he was skeptical about using it.