Phantom Blade Zero: How to Complete the Heart of the Fist Quest

Heart of the Fist is one of the more direct side quests in Phantom Blade Zero, but its clue can still cause a brief detour if you do not remember the layout of Mirrorwood. The objective asks Soul to honor the Iron Fist Master by taking incense to his grave on behalf of the Iron Fiend. The quest description only identifies the wider Mirrorwood area, leaving players to narrow down the exact location for themselves.

Fortunately, the destination is close to a Bell checkpoint and is likely somewhere you have already passed while progressing through the Crimson Forest. Completing the quest is worthwhile beyond simply clearing it from the journal: the reward combines with an item gained during the first encounter with the Iron Fiend, forming the Worldbreaker Fist. That completed item is needed for Soul Tempering the Iron Gauntlets Phantom Edge.

Heart of the Fist quick answer

To finish Heart of the Fist, travel to the Burial Grounds Bell on the eastern side of the Crimson Forest. From there, enter the large frozen clearing nearby and approach the prominent grave positioned in its center. Interact with it to trigger a short scene in which Soul burns incense for the Iron Fist Master.

Once the scene ends, Heart of the Fist is complete. You receive Fist Fragment: Shell, which automatically joins the Fist Fragment: Core obtained after first battling the Iron Fiend. The two pieces create the Worldbreaker Fist.

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Where to find the Iron Fist Master's grave

The key to this quest is recognizing that Mirrorwood is part of the broader route through the Crimson Forest rather than an isolated late-game destination. The grave is located near the Burial Grounds Bell, a fast-travel point in the eastern portion of the region. If you have unlocked that Bell, use it rather than retracing the full path through the forest.

1. Open the fast-travel menu and select Burial Grounds Bell.
2. After arriving, look toward the nearby icy open area.
3. Walk into the clearing and find the large, conspicuous grave standing around the middle of the space.
4. Interact with the grave to place the incense and initiate the quest-ending scene.

There are no additional enemies to defeat, riddles to solve, or special quest items to manually equip at the grave. If the interaction does not immediately appear, make sure you are at the largest tomb in the clearing rather than one of the smaller environmental markers around the Burial Grounds.

Why the grave can be easy to overlook

Heart of the Fist is simple in structure, yet its wording can make the search seem larger than it really is. "Mirrorwood" sounds like a broad zone instruction, and the Crimson Forest contains enough branching paths, frozen scenery, and combat encounters to make a player assume they need to explore a new section.

In practice, the target sits near a known checkpoint and along territory that is familiar by the time the quest becomes relevant. Players who have been focused on combat, loot, or the main route may have passed the grave without realizing it would later become interactive. Returning via the Burial Grounds Bell reduces the task to a very short walk.

It is also useful to treat the quest as a brief return visit rather than a major expedition. You do not need to search every part of Mirrorwood, revisit all prior boss arenas, or head deep into the forest's more remote paths. The central grave in the frozen clearing is the only location required.

Heart of the Fist rewards explained

The immediate quest reward is Fist Fragment: Shell. On its own, the Shell is only part of the larger upgrade path, but it is designed to pair with the Fist Fragment: Core from the initial Iron Fiend fight. The combination happens automatically after the quest concludes, so there is no separate crafting menu step needed just to assemble the item.

Together, the two fragments become the Worldbreaker Fist. This is the item required to Soul Temper the Iron Gauntlets Phantom Edge. For players building around those gauntlets, Heart of the Fist is therefore an important progression stop rather than optional flavor alone.

The quest also provides a small narrative payoff for the Iron Fiend's request. Soul's act of leaving incense at the master's grave gives the encounter a respectful conclusion and connects the fragment reward to the history behind the weapon-related upgrade. Even if you are not immediately planning to use the Iron Gauntlets Phantom Edge, it is sensible to complete the objective while you are already exploring the Crimson Forest.

What to do after completing the quest

After obtaining the Worldbreaker Fist, continue through the colder sections of the Crimson Forest if you still have unfinished activities in the region. This part of the game includes several useful combat and upgrade-related objectives that can be handled in a productive order.

One worthwhile stop is Sha-Chi Tower. If the Use It Against Them quest remains incomplete, return there to spar with the Jade Dancer and the Iron Fiend. Finishing that activity provides the Soul Tempering item associated with the Fiend Saws dual swords. As with Heart of the Fist, this makes the detour valuable for players who want to keep multiple weapon paths available.

The Crimson Forest also contains the remaining progression for the Triple Threat quest. Continue toward the far end of the forest to face the Three-Faced Puppet again. Taking care of Heart of the Fist before that encounter can make your return through the area feel more efficient, especially if you prefer to complete side activities before moving on from a major zone.

A clean Crimson Forest checklist

If you are using the region as an opportunity to finish available content, the following order keeps travel relatively focused:

• Fast travel to Burial Grounds Bell and complete Heart of the Fist at the Iron Fist Master's grave.
• Confirm that Fist Fragment: Shell has combined with Fist Fragment: Core to create the Worldbreaker Fist.
• Use the Worldbreaker Fist when preparing to Soul Temper the Iron Gauntlets Phantom Edge.
• Visit Sha-Chi Tower for the Jade Dancer and Iron Fiend sparring activity tied to Use It Against Them.
• Continue toward the end of the Crimson Forest for the next Three-Faced Puppet confrontation and the remaining Triple Threat progress.

This is not a mandatory sequence for every build, but it helps group related tasks together. The area's quests and sparring encounters reward players who return to earlier landmarks with newly available objectives in mind.

Final tips for Heart of the Fist

The main lesson is not to overthink the location hint. The Iron Fist Master's grave is not hidden behind a secret route or a difficult traversal challenge. Start at Burial Grounds Bell, step into the icy clearing, and inspect the largest grave at its center.

Make sure you have already reached the point where the Iron Fiend has given the quest and where you possess Fist Fragment: Core from the earlier fight. Once the incense scene plays, the reward process is automatic. There is no need to manually combine the fragments before looking for the Worldbreaker Fist.

With Heart of the Fist finished, Soul has both honored the fallen master and secured a key component for the Iron Gauntlets Phantom Edge upgrade route. It is a short quest, but completing it promptly prevents a useful Soul Tempering requirement from being left behind while the journey through the Crimson Forest continues.