[MultiWonder]

Yin and Yang's Gunsmoke Spiritual complete set does not properly apply its -10% light / dark resistance ignore effect.

Whether or not it's supposed to lower one's resistance no matter what (even past 0), or simply lower it until it hits 0 is unclear to me, but whatever it may be, there's zero difference in damage output for its basic, non-muddled basic attacks whether or not you have the charm equipped.

If it means anything, I tested this with the following combinations:

Gilded Yin / Normal Yang / Yinyang Charm
Gilded Yin / Gilded Yang / Yinyang Charm

The outcome is the same regardless.

I also did end up trying to use only ONE of the guns alongside the Yinyang charm and did not get access to Double Dao either way.
While this makes sense given what the skill itself requires (both guns), it does leave me wondering if the charm even counts toward the set to begin with.

[Neus]

The effect is a pierce effect, so it won't have any impact if the enemy has no light/dark resist.

In order to use Double Dao, you need 2 weapons, and both must be part of the Gunsmoke Spiritual set.

[MultiWonder]

Understandable!

I do wish to bring up that the effect just doesn't seem to work regardless! I tried this against a target with 34% light / dark resistance and neither were brought down to non-Resist! levels

I was curious if it was an ignore or a pierce, but even as a pierce, it just doesn't seem to work right now(?)

[Neus]

This has been corrected in 3.00.