I really hope the "villain" did die, instead of the typical "I beat him unconscious and therefore it's all over -> 3 days later: Oh no, he escaped and is doing evil things again, now more cruel than ever, how could anyone have seen this coming..." setting.
Also, why is he wondering if he became super powerful... Hasn't pretty much everyone so far been saying that humans are super powerful and he has seen evidence of his own superior strength all throughout this story... Shouldn't it be obvious at this point?