Need help with Miriam's sold out achievement

[-ImAl2EyEd_]

I've watched this video. It seems like she was struggled every time we shoot by using Ribbon's.

https://www.youtube.com/watch?v=aOmrSe9mMJo

But when I tried myself. Miriam keeps walking & using the items without any struggle at all. So how can I achieve that? Is there any requirement like some badges or items before fighting her to get the same result as in the video above?

[Lulzaur]

Do you have any items on you? If so, she will do a move for each one of them. For the achievement, you must not have at least 10 of the items she can use.

I don't know if disabling them from the menu works, so you could try that. If not, then you may want to give another try in a 0% run.

[Flariz]

Originally posted by Lulzaur:

I don't know if disabling them from the menu works, so you could try that. If not, then you may want to give another try in a 0% run.

No, it doesnt.

Miriam always knows if you got an item or not, she will use it during the fight even if you disable it.

Disabling items fools all other bosses (Level downgrade + some attacks change to adapt to your items), Syaro’s strange box, and even the very hud of the game itself. But not Miriam, somehow..

I guess shes just that good about item knowledge, being the shopkeeper and all...

So yeah, 0% run is your best bet.

OR, alternatively, I am pretty sure doing UPRPRC Girl Boss Rush from the Artbook DLC also nets you this achievement. Naturally, you need to survive until Miriam...