challenge: definitive deviation

Hi,
So I've been running ossuary sanctum with 250% movespeed, run through sanctum traps cause i have enough inspiration, focus on benevolent fountain, merchant and accursed pact (finished most my santcum with 50 major/minor boon/affliction)
I did it for 2 months, which must be hundreds of santcum, and I'm still at 15/17

Am i missing something. cause that is the only challenge stopping me from 40/40, which would be a first for me

TY

What helped me was stacking relics that give the merchant more choices.

I'm completed it by stacking relics with "1-2 Additional Rooms Revealed", and prioritizing pacts over everything.

More Rooms Revealed -> More Pacts -> More major Boons/Afflictions.

i have equiped 3 relics for one more merchand choice, i end every run with 50+ boons/curse
but haven't found any of the room revealed
i think i'll give up, ty anyway