Fiend Saws: moves, acquisition and upgrade gates

Acquisition or Soul Temper

Village of Lu: complete the Young Mistress quest before defeating Mu Xiaokui.

Panel and recorded level

Inputs and core loop

Standard Square route: ▢ ▢ ▢ ▢ ▢

Sha-Chi Triangle route: △ △ △ △

Hits build 20s Erosion; full gauge bursts. L2 spends one Essence for Fiend Form 10s: unblockable attacks and extra broken-target damage; L2 again gives a free finisher.

Level gates and upgrade effects

Temper: after Erosion burst, attacks become unblockable 3s; 5: held Square changes burst to stronger depletion; 15: held Triangle changes burst to stronger HP damage; 25: Circle detonates all erosions, extending any resulting Guard Break; 30: much stronger bursts.

Practice order

Start with a short Square chain to judge reach and recovery, then add Sha-Chi attacks and finally the special state or timed input. Swapping restores Sha-Chi but has a cooldown; executions may add a separate 15-second swap lock. Compare matching upgrade levels and change your damage plan when the target is immune.

Keep exploring

Source and version

Reviewed November 1, 2026. Values apply at the stated levels and conditions.

• https://phantombladezero.wiki.fextralife.com/Fiend_Saws

The accessory exception to biological immunity

Without Livingwood Talisman, puppets, phantom bodies and golden bodies resist the biological Bleed/life-drain effects described here. The base accessory enables 50% effectiveness; +1 enables 70%, still not full effectiveness.

Equipment-specific tempering materials

Look up the matching material, known routes and irreversible tempering conditions.

Catalogue panel and acquisition note

Fiend Saws

Damage 302 / Guard Break 120

Village of Lu: collect Mu Xiaokui’s five ribbons, unlock her additional phase and defeat it.