Acheron Pre-Farm Guide: Materials & Relics

To pre-farm for Acheron in Honkai: Star Rail, you need to gather her level-up materials, trace materials, and a specific set of relics and light cones before her banner releases. This guide lists exactly what to collect, where to get it, and how much you need to fully max her out.

Who Is Acheron?

Acheron is a 5-star Lightning character following the Path of Nihility, introduced in version 2.1. She is a damage dealer who relies on building up a unique debuff called “Mirage” on enemies, then consuming it to unleash her ultimate. Her kit revolves around debuffs and dealing massive damage to single targets and small groups, making her a strong addition to teams that can apply debuffs quickly.

What Materials Does Acheron Need?

To fully level Acheron from level 1 to 80 and max all her traces (skills, ultimate, talent, and passive), you will need the following materials. These are the exact quantities required for a complete build, assuming you start from zero.

• Character Ascension Materials:
  • 15x Dream Collection Component
  • 15x Dream Flow Valve
  • 15x Dream Making Engine
  • 65x Raging Heart (boss drop from Stagnant Shadow: Shape of Mirage)
  • 308,000 Credits
• Trace Materials:
  • 18x Broken Teeth of Iron Wolf
  • 69x Lifeless Blade of the Wolf
  • 139x Maimed Fang of the Wolf
  • 12x Auspice Sliver (weekly boss drop from Echo of War: The Blooming Grimoire)
  • 2x Tracks of Destiny (for the bonus ability nodes)
  • 3,000,000 Credits (approx.)

Note: The exact trace material counts can vary slightly depending on which traces you prioritize, but the above totals cover all skills, the ultimate, the talent, and both passive abilities.

Where to Farm Each Material

Each material has a specific source. Here is where to get everything you need:

• Dream Collection Component, Dream Flow Valve, Dream Making Engine: These are dropped by enemies in the Penacony region, specifically the “Dreamjolt Troupe” enemies (like the Dreamjolt Troupe’s Mr. Domescreen and Dreamjolt Troupe’s Sweet Gorilla). You can also synthesize them from lower-tier materials.
• Raging Heart: This is a boss material dropped by the Stagnant Shadow: Shape of Mirage, located on Penacony. You will need to defeat this boss multiple times to get 65 pieces.
• Broken Teeth of Iron Wolf, Lifeless Blade of the Wolf, Maimed Fang of the Wolf: These are trace materials obtained from the Crimson Calyx on the Xianzhou Luofu (Calyx (Crimson): Bud of Destruction). The drop rate scales with the difficulty level.
• Auspice Sliver: This is a weekly boss material dropped by the Echo of War: The Blooming Grimoire, which is the weekly challenge against the “Something Unto Death” boss. You can only claim rewards from this once per week, so start early.
• Tracks of Destiny: These are limited currency obtained from events, the Nameless Honor (battle pass), and the Embers Exchange shop. They are used to unlock the bonus ability nodes on Acheron’s trace tree.

Relic Recommendations for Acheron

For relics, Acheron benefits most from the Pioneer Diver of Dead Waters set (4-piece), which increases her CRIT Rate against debuffed enemies and increases her CRIT DMG when the enemy has 3 or more debuffs. Alternatively, you can use a 2-piece combination of Pioneer Diver and Band of Sizzling Thunder (which boosts Lightning DMG) if you haven’t farmed the full set yet.

For the Planar Ornaments, the Izumo Gensei and Takama Divine Realm set is her best-in-slot, as it increases ATK and provides a CRIT Rate boost if at least one other character on the team follows the same Path (Nihility). If you don’t have that, Space Sealing Station (which boosts ATK) is a solid fallback.

In terms of stats, aim for:

• Body: CRIT Rate or CRIT DMG (depending on your weapon and substats)
• Feet: ATK% (or Speed if you need to hit a specific speed threshold, but ATK% is generally better)
• Planar Sphere: Lightning DMG Bonus
• Link Rope: ATK%
• Substats: CRIT Rate, CRIT DMG, ATK%, and Speed (in that order of priority)

Light Cone Options

Acheron’s signature light cone is Along the Passing Shore, which is her best-in-slot and provides CRIT DMG and a debuff on hit. However, if you don’t plan to pull for it, there are several free-to-play alternatives:

• Good Night and Sleep Well (4-star): This is her best 4-star option, as it increases DMG dealt to enemies with debuffs, which synergizes perfectly with her kit.
• Fermata (4-star): This increases DMG against enemies affected by Shock or Wind Shear, but it’s less consistent if your team doesn’t apply those specific debuffs.
• Solitary Healing (4-star): This increases Break Effect and regenerates energy, but it’s not ideal since Acheron doesn’t rely on energy regeneration.

If you have the 5-star light cone In the Name of the World (Welt’s signature), it’s also a decent option, though not as good as her signature.

How to Plan Your Pre-Farming Efficiently

Pre-farming is about saving time after her banner drops. Here’s a step-by-step plan:

1. Check your current inventory: See which materials you already have and which you need to farm.
2. Prioritize the weekly boss: Since you can only claim the weekly boss reward once per week, make sure to farm Auspice Sliver every week starting now. You need 12 in total, so this will take at least 2-3 weeks.
3. Farm the boss material: The Stagnant Shadow boss drops Raging Heart. This costs 30 Trailblaze Power per run, so plan to do this multiple times.
4. Farm trace materials: The Crimson Calyx on the Luofu drops the wolf materials. You’ll need a lot of these, so start farming them once you’ve secured the boss materials.
5. Farm enemy drops: The Dreamjolt Troupe enemies in Penacony drop the Dream materials. You can also synthesize them from lower-tier materials if you have a surplus.
6. Save credits and XP books: You’ll need about 3.3 million credits and a large number of Traveler’s Guides (or equivalent XP books) to level her to 80. You can farm credits from the Calyx (Golden) and XP books from the Calyx (Crimson) on any world.

Common Problems and Misconceptions

One common mistake is forgetting that Acheron’s ultimate does not require energy. She instead gains stacks of “Mirage” when debuffs are applied to enemies. This means you don’t need to build Energy Regeneration on her, and her ultimate is not affected by energy-related effects. Another misconception is that she needs Speed to act more often, but since her damage comes from her ultimate, ATK% is usually more valuable than Speed on her boots.

Another issue is that players might forget to farm the weekly boss early. Since the weekly boss reward is limited, if you start farming late, you might not have enough Auspice Slivers to max her traces on day one. Always prioritize the weekly boss.

Cost Comparison: Pre-Farming vs. Post-Release

Pre-farming doesn’t change the total cost of materials, but it saves you time. If you wait until after her release, you’ll be spending Trailblaze Power on the same domains, but you’ll also be competing with other players for the same resources (though that doesn’t affect drop rates). The main benefit is that you can use her at full strength immediately upon release, rather than waiting weeks to farm materials.

Frequently Asked Questions

What is the best relic set for Acheron?

The best relic set is the 4-piece Pioneer Diver of Dead Waters, which boosts CRIT Rate against debuffed enemies and CRIT DMG when the enemy has 3+ debuffs. If you don’t have it, a 2-piece Pioneer Diver with 2-piece Band of Sizzling Thunder is a good substitute.

Does Acheron need speed boots?

Generally no. Acheron’s damage comes from her ultimate, which is triggered by debuffs, not by acting frequently. ATK% boots are usually better, unless you need to hit a specific speed threshold for your team composition (e.g., to act before a buffer).

How many times do I need to farm the Stagnant Shadow for Raging Heart?

You need 65 Raging Hearts for full ascension. Each run of Stagnant Shadow: Shape of Mirage gives 1-2 Raging Hearts (with a chance for more on higher difficulties). On average, you’ll need around 40-50 runs, costing 1,200-1,500 Trailblaze Power.

Can I use the 4-star light cone “Good Night and Sleep Well” on Acheron?

Yes, it’s her best 4-star option. It increases DMG dealt to enemies with debuffs, which synergizes perfectly with her kit. At Superimposition 5, it can rival her signature light cone in some scenarios.

What is the weekly boss material for Acheron?

Acheron uses Auspice Sliver, which drops from the Echo of War: The Blooming Grimoire. You need 12 in total to max all her traces, and you can only claim rewards from this boss once per week.

Is it worth pre-farming for Acheron if I’m not sure I’ll get her?

If you’re close to pity and have enough pulls, pre-farming is a smart move because the materials are useful for other Nihility characters as well (like Welt or Kafka). If you don’t get her, you’ll have a head start on building another character.

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