Oh yeah, forgot to mention but the PC version has customizable difficulty settings and for most of the game I left it as default. So if I die I can restart at the entrance of the current floor but that started feeling tedious and like a waste of time so last night I turned on battle retry and holy fuck what a broken, garbage setting lol.
I assumed I'd just restart the battle from the beginning but no. I didn't die again until the dungeon's boss and my entire party got revived + healed but the boss's health bar didn't refill. It's not retry so much as God mode; just a straight-up built-in cheat code. I was so disgusted that I actually just let myself die again and declined the retry so I could start at the floor entrance instead lol. It was the last floor so it didn't really change anything.