WHAT WHAT!!
"THIS reset"..!! So Hacksaw has been to other realities OR the box has been opened before very recently several times perhaps resetting the events of current ReSet each time! Possibly.

Wild speculation ensues -->
He recognizes Mike's name-- this could mean he has a connection to her family (my first thought was like "BROTHER?!" lol, but then he mentioned her dying so maybe it wasn't related to her family name exactly OR MAYBE IT WAS?!) or it's just because of him knowing things that happened to her in other realities or in this reality but in previous resets. BUT WHAT I FOUND MOST INTERESTING-- is that he asked who the box bearer was and was surprised by Mike's name. So in that case -- Mike was not always the box bearer in Alt. Realities or previous resets, which has very interesting implications. So maybe she was just a side character before and got killed in another box bearer's reality but then in this ReSet it's the other way around... or he's also had ones where she was the bearer in other timelines/resets... But then that begs the question, who is Hacksaw and what's his story?
My mind is just going WHAT WHAT and spinning trying to make sense of what it could be xD I'm so excited.

HACKSAW BEST BOY no. 2!
Could there be more to the Vinsons... Tell me your secrets, Hacksaw -looks into his eyes- Reveal the truth behind that madness. -looks away because intimidated still LOL- //actually also just realised that if he's cray cray might not be able to trust all of what he says.
...I love this. This page has made my night I am so excited.

//also I will cut my comments length down I promise LOL They get longer every time. XD