I enjoy using the rare metal/adamantite bangle combo simply due to the fact that I (almost) 1 shot everything, but it makes Noct so squishy that everything at the endgame 1 shots me. I'm currently doing the menace beneath Costlemark quest, so definitely everything can 1 shot Noct, and with no items allowed, I finally got my first game over from fighting. What else can I give Noct to actually survive the fights easily?

Right now here is my setup:

Ultima Blade

Sword of the Father or Sword of the Tall

Shield of the Just

Depending on the room, magic or another Royal Arm.

Rare Metal

Adamantite Bangle

Sigil Ring of the Founder King

Prince fatigues.

Without losing the break damage limit, how can I improve my survivability?