having rewatched the trailer today (i can't decide if it's worth investigating the song further) i've got a rough theory figured out.
pretty sure it's been mentioned before, but i don't think he's really being held captive in the room. you'll notice while he's running around whatever city it is and killing everything, he stops to hold his head in pain and then it syncs him with the one being interrogated.
i think he's having an identity crisis. it's consistent with the whole redyed hair thing. when he's being interrogated, it's not actually happening. it's sort of a symbolic depiction of his resistance to who he is, which he's resisting (hence trying to shut it out, not answering...not until the end of the trailer).
that doesn't really fit with the whole "subject xxxxx" appearing on screen bit, the camera footage, or the voice but those could all just be things on his mind that worked their way into the hallucination. elements of his conscious or subconscious .
course it could also be the other way around. the fighting is all in the restrained dante's head, but not as likely.