Thanks for the comment! Unfortunately, this was a previous project a friend and I were working on that I turned into this 2-week game jam project. We since then abandoned this project to work on something more grounded in reality (still survival horror, not fixed cam though). I apologize for the boss being difficult, but there is a small trick to it; there's a room with a bunch of monitors in it, and each monitor destroyed takes off HP from the boss.
Or there is the tilde key...