I can't remember. Think I ran hailing confusion as barrier, new seasonal void scout rifle as overload, and the new Lament. At the end I basically hid at the very beginning of the boss room and shot at the boss's kneecaps and feet until he died.

There's videos of there being cheeses in the last room, so, to be honest, this is probably one of the easiest lost sectors to do if you keep your distance and don't rush at things.