Not gonna lie, I didn't remember the characters who died in the last few chapters even existed. I don't see the point of showing all the struggle for so goddmn long, I still don't care if they live or die.
Plus, the gal who didn't have a unique skill despite her s rank, at least until now she had this 'quirk' about her that helped to remember her bland character, but now she's just been wasted for the usual trope of a power up at the convenient time.