Phantom Blade Zero Sundering Dual Axes: Heartpiercer's Axes and the Aura They Charge

Getting the Sundering Dual Axes

Defeat Heartpiercer, the Elite Shadow Warden, in the courtyard of the White Serpent House in the Meigu Lake region. The axes are handed over the moment that fight is won, so there is no quest step after it and nothing to miss once the region is open. Its in-game Chinese name is 天煞双钺.

It counts as a Dual-Wield Blade on the Blade roster, and the boss list has Heartpiercer under Meigu Lake.

What it does in a fight

The launch-build figures, current as of 2026-11-05:

The axes are built around the [Baleful Aura] gauge. Square hits fill it, and once it is full the aura runs for 20 seconds: damage goes up, Sha-Chi drains faster, and the triangle combos hurl the axes so they latch onto enemies and keep slicing them. The gauge empties when the aura ends, so the loop is to keep feeding it with normal swings.

Moves: Standard Combo (five square attacks) and Sha-Chi Combo (four triangle attacks, which can be unleashed after any swing of a standard combo and hit harder once Sha-Chi is full). The Power Surge is Tiansha Reaving — L2, 1 Sha-Chi Essence, and the slashes it unleashes cannot be blocked.

Taking it to level 30

Circling Ambush at level 5 replaces your dodges with a close-range circling step, and a perfect dodge on it builds the Baleful Aura Gauge far faster than an ordinary dodge — that is how you get the aura up on demand instead of grinding it with square hits. The published perk list names the other unlocks but not what each one changes, so read the effect on the upgrade screen before you spend.

What the upgrade ladder costs

Levels are bought at any bell and cost Remnant Dust plus the dual-wield material chain:

The published figures for this Blade give no per-band Remnant Dust price and no level 60 stat row, so read the dust cost of each step off the upgrade screen in-game. Sources also disagree on the cap itself: general weapon upgrade guides put it at level 30, while the community database's own upgrade table runs a 59-step ladder to level 60.

Soul Tempering

Tiansha Twin Calamities — a Honed Blacksteel and 5,000 Remnant Dust. It adds a second tier to the Baleful Aura Gauge, which strengthens the triangle combos, Baleful Barrage and Heart Rending Strike and refreshes the aura's duration. Soul Tempering unlocks at Chapter 4 and happens at Myst in the Order's underground tavern in Pangzhen, and it cannot be undone.

Where to go next

• The Blade roster — every Blade, its class and where it comes from.
• Weapon types — what a twin-wield pair trades away.
• Sha-Chi — the bar the Baleful Aura drains faster.
• Best weapons — the picks for bosses, crowds and shields.
• Phantom Edges — the two second-slot weapons that go with your Blades.