I'm sure I saw someone write that you can light your arrows on extinguished torches too.so you can't unlock the new secret if you already shot out all the torches, there is no fire close enough and one way requires crawling and the other way requires climbing, both put fire arrow away.
Also, I can't believe this update is mostly centered around a shooting gallery when the shooting mechanics are fucking terrible. I used the dev buttons to unlock the bonus and all 3 easy lockers but everything else is impossible