Okay, just finished my run, real talk here
This is really challenging, especially if you take the "everything in the shop becomes more expensive buff" and the "remove the first stagger bar buff"
I played straight poise here with BL ids and the FSO and it was really hard
On turn 1 past like floor 13 it's impossible to do anything, even with every buff known to man. You NEED the 15 offence level from cwcm and the tremor debuffs from downpour + melted eyeball , late bloomers tattoo offence levels, red-stained goyssipium offence level down, literally EVERY debuff and buff from every status that works. You cant clash for shit until turn 2 at the least
Poise isnt that good because even with full skill 3s you get oneshot a lot to 1 tails coin, 1 unbreakable, 1 counter, etc
And your damage is slow which exposes you to the risk of something going wrong more often
You can heal back up after taking a hit, even on floor 15, but many attacks do 100-0 you unless you have death protection effects
Poise is tortuously slow even with every gift and lunar memory
And skill 3 clashing is only moderately consistent after turn 1 to make up for it. Keep in mind that you will die and have to use backup sinners and that those sinners need their skill 3s replaced too, every id you bring needs to be real
From floor 14 and beyond I needed to reset multiple times to the fight of the ground. You do have to use real strats like sacking bad ids on turn 1 since no ids can clash, let them die, and get your real ids from backups and such.
The new mode is definitely a real test in skill, but it gets super lame those last few floors and very rng since 1 bad roll loses you the fight
The game does have a "try this floor again with no penalty" function if you fully wipe though so dont be afraid to fight to the last sinner, you cant actually "lose"
Floors 1-13 are a slog
Floors 14-15 are assrape (mileage may vary from package to package but I tried them all and can say most are bad in their own way)