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Acheron — Lightning Nihility character | Honkai: Star Rail

Galaxy Ranger

Acheron

Build guide · Honkai: Star Rail

5-star
LightningNihilitySupport

English voice: Allegra Clark

The best Acheron build in Honkai: Star Rail (Version 4.4) is Along the Passing Shore with Pioneer Diver of Dead Waters. Updated August 28, 2026

Where these rankings come fromThe light cone order, relic sets and stat priorities on this tab are prydwen.gg’s, measured in play and rephrased. Relative damage figures are ratios against the bottom of each ranking, not absolute numbers, and each one holds only for the superimposition and team its row states. Everything else — base stats, passive text, material totals — is read from the game’s own data.

Light cones

Relics

Planar ornaments

Main stats

Body
CRIT Rate >= CRIT DMG
Feet
ATK% > Speed
Planar Sphere
ATK% > Lightning DMG
Link Rope
ATK%

Substat priority

  1. 1SPD (breakpoint if you play 134+ Acheron; with Sparkle, fully ignore Speed)Best
  2. 2CRIT RATE = CRIT DMG
  3. 3ATK%

Aim to maintain a ratio of 1% CRIT RATE per 2% CRIT DMG with a good stat line in endgame being 80% CRIT RATE and 160% CRIT DMG to start with.

Trace priority

  1. #1

    Ultimate

    Max first

  2. #2

    Skill = Talent

    Then

  3. #3

    Basic

    Next

Major traces, best first: The Abyss (A4) > Thunder Core (A6) > Red Oni (A2)

Best Eidolons

  1. Acheron E1 Silenced Sky Spake Sooth — Eidolon | Honkai: Star RailE1
  2. Acheron E2 Mute Thunder in Still Tempest — Eidolon | Honkai: Star RailE2
  3. Acheron E3 Frost Bites in Death — Eidolon | Honkai: Star RailE3
  4. Acheron E4 Shrined Fire for Mirrored Soul — Eidolon | Honkai: Star RailE4
  5. Acheron E5 Strewn Souls on Erased Earths — Eidolon | Honkai: Star RailE5
  6. Acheron E6 Apocalypse, the Emancipator — Eidolon | Honkai: Star RailE6
  1. Acheron E1 Silenced Sky Spake Sooth — Eidolon | Honkai: Star RailE1

    Silenced Sky Spake Sooth

    Game text

    When dealing DMG to debuffed enemies, increases CRIT Rate by 18%.

  2. Acheron E2 Mute Thunder in Still Tempest — Eidolon | Honkai: Star RailE2

    Mute Thunder in Still Tempest

    Game text

    The number of Nihility characters required for the Trace "The Abyss" to achieve its highest possible effect is reduced by 1. When this unit's turn starts, gains 1 point of Slashed Dream and inflicts 1 stack of Crimson Knot on the enemy with the most Crimson Knot stacks.

  3. Acheron E4 Shrined Fire for Mirrored Soul — Eidolon | Honkai: Star RailE4

    Shrined Fire for Mirrored Soul

    Game text

    When enemy targets enter combat, inflicts them with the Ultimate DMG Vulnerability, increasing the amount of Ultimate DMG they take by 8%.

  4. Acheron E6 Apocalypse, the Emancipator — Eidolon | Honkai: Star RailE6

    Apocalypse, the Emancipator

    Game text

    Increases the All-Type RES PEN for the Ultimate DMG dealt by Acheron by 20%. The DMG dealt by Basic ATK and Skill will also be considered as Ultimate DMG and can Reduce enemy Toughness regardless of Weakness Types. When breaking Weaknesses, triggers the Lightning Weakness Break effect.

Teams

Acheron team

Lightning · NihilityLeads

Acheron charges her Ultimate off debuffs other characters apply, so the team runs two more Nihility units and a sustain that never needs a Skill Point.

  1. Acheron — Lightning Nihility character | Honkai: Star RailAcheron — this characterMain DPS
  2. Jiaoqiu — Fire Nihility character | Honkai: Star RailJiaoqiuNihility debuffer
  3. Pela — Ice Nihility character | Honkai: Star RailPelaDEF shred
  4. Aventurine — Imaginary Preservation character | Honkai: Star RailAventurineSustain

All teams, with every replacement

Honkai: Star Rail 5★ Lightning Nihility Support

Acheron build summary

Updated August 28, 2026

Along the Passing Shore tops the light cone ranking for Acheron, at 125.50% relative damage at S1, ahead of Incessant Rain, Good Night and Sleep Well and Boundless Choreo. That order is prydwen.gg's, measured in play and rephrased here; every row of it sits under Light cones below.

Run Pioneer Diver of Dead Waters on Acheron, with Scholar Lost in Erudition and Band of Sizzling Thunder behind it. The planar ornament is Izumo Gensei and Takama Divine Realm. Main stats are CRIT Rate >= CRIT DMG body, ATK% > Speed feet, ATK% > Lightning DMG sphere, ATK% rope. Roll substats in the order SPD (breakpoint if you play 134+ Acheron; with Sparkle, fully ignore Speed) > CRIT RATE = CRIT DMG > ATK%.

Trace priority is Ultimate > Skill = Talent > Basic. The Ultimate costs 9 energy, which is what an Energy Regeneration Rate target has to clear.

The strongest team is Acheron, Jiaoqiu, Pela and Aventurine, built around Acheron — Lightning · Nihility.

Role
Support
Main stats
CRIT Rate >= CRIT DMG body, ATK% > Speed feet, ATK% > Lightning DMG sphere, ATK% rope
Substat priority
SPD (breakpoint if you play 134+ Acheron; with Sparkle, fully ignore Speed) > CRIT RATE = CRIT DMG > ATK%
Trace priority
Ultimate > Skill = Talent > Basic
Best team
Acheron, Jiaoqiu, Pela, Aventurine
Ultimate energy cost
9 energy
Key ascension material
15× Dream Making Engine
Last updated
August 28, 2026

Abilities

Acheron Trilateral Wiltcross — basic atk icon | Honkai: Star Rail
Basic

Trilateral Wiltcross

  • Single Target
  • 30 Toughness

Deals Lightning DMG equal to 100% of Acheron's ATK to one designated enemy target.

Ability level

6 is the cap from trace materials; Eidolons add the rest.

Basic ATK DMG
100%
All 10 levels
Attribute12345678910
Basic ATK DMG50%60%70%80%90%100%110%120%130%140%
Acheron Octobolt Flash — skill icon | Honkai: Star Rail
Skill

Octobolt Flash

  • Blast
  • 60 Toughness

Gains 1 point(s) of "Slashed Dream." Inflicts 1 stack(s) of "Crimson Knot" on one designated enemy target, dealing Lightning DMG equal to 160% of Acheron's ATK to this target, as well as Lightning DMG equal to 60% of Acheron's ATK to adjacent targets.

Ability level

10 is the cap from trace materials; Eidolons add the rest.

Skill DMG
160%
Adjacent DMG
60%
All 15 levels
Attribute123456789101112131415
Skill DMG80%88%96%104%112%120%130%140%150%160%168%176%184%192%200%
Adjacent DMG30%33%36%39%42%45%49%53%56%60%63%66%69%72%75%
Acheron Slashed Dream Cries in Red — ultimate icon | Honkai: Star Rail
Ultimate

Slashed Dream Cries in Red

  • AoE

Sequentially unleash "Rainblade" 3 times and "Stygian Resurge" 1 time, dealing Lightning DMG up to 372% of Acheron's ATK to one designated enemy target, as well as Lightning DMG up to 300% of Acheron's ATK to other targets. "Rainblade": Deals Lightning DMG equal to 24.0% of Acheron's ATK to one designated enemy target and removes up to 3 stacks of "Crimson Knot" from the target. When "Crimson Knot" is removed, immediately deals Lightning DMG equal to 15.0% of Acheron's ATK to all enemies. For every stack of "Crimson Knot" removed, this DMG Multiplier is additionally increased, up to a maximum of 60.0%. "Stygian Resurge": Deals Lightning DMG equal to 120% of Acheron's ATK to all enemies and remove all "Crimson Knots." "Crimson Knot" cannot be applied to enemies during the Ultimate.

Ability level

10 is the cap from trace materials; Eidolons add the rest.

Ultimate DMG
372%
Ultimate DMG (2)
300%
Ultimate DMG (3)
24.0%
AoE DMG
15.0%
Ultimate DMG (4)
60.0%
AoE DMG (2)
120%
All 15 levels
Attribute123456789101112131415
Ultimate DMG223%238%253%268%283%298%316%335%353%372%387%402%417%432%446%
Ultimate DMG (2)180%192%204%216%228%240%255%270%285%300%312%324%336%348%360%
Ultimate DMG (3)14.4%15.4%16.3%17.3%18.2%19.2%20.4%21.6%22.8%24.0%25.0%25.9%26.9%27.8%28.8%
AoE DMG9.0%9.6%10.2%10.8%11.4%12.0%12.8%13.5%14.2%15.0%15.6%16.2%16.8%17.4%18.0%
Ultimate DMG (4)36.0%38.4%40.8%43.2%45.6%48.0%51.0%54.0%57.0%60.0%62.4%64.8%67.2%69.6%72.0%
AoE DMG (2)72%77%82%86%91%96%102%108%114%120%125%130%134%139%144%
Acheron Atop Rainleaf Hangs Oneness — talent icon | Honkai: Star Rail
Talent

Atop Rainleaf Hangs Oneness

  • Enhance

When Slashed Dream reaches 9 point(s), the Ultimate can be activated. During the Ultimate, reduces enemies' Toughness regardless of Weakness Types and reduces all enemies' All-Type RES by 20%, lasting until the end of the Ultimate. When any unit inflicts debuffs on an enemy target while using their ability, Acheron gains 1 point of Slashed Dream and inflicts 1 stack of Crimson Knot on a target. If debuffs are inflicted on multiple targets, then the 1 stack of Crimson Knot will be inflicted on the enemy target with the most Crimson Knot stacks. This effect can only trigger once for every ability use. After an enemy target exits the field or gets defeated by any unit while Acheron is on the field, their Crimson Knot stacks will be transferred to the enemy target with the most Crimson Knot stacks on the whole field.

Ability level

10 is the cap from trace materials; Eidolons add the rest.

Reduction
20%
All 15 levels
Attribute123456789101112131415
Reduction10%11%12%13%14%15%16%18%19%20%21%22%23%24%25%

Technique and fixed effects

Acheron Rainblade — ultimate icon | Honkai: Star Rail
Ultimate

Rainblade

  • AoE
  • 15 Toughness
Acheron Rainblade — ultimate icon | Honkai: Star Rail
Ultimate

Rainblade

  • AoE
  • 15 Toughness
Acheron Rainblade — ultimate icon | Honkai: Star Rail
Ultimate

Rainblade

  • AoE
  • 15 Toughness
Acheron Stygian Resurge — ultimate icon | Honkai: Star Rail
Ultimate

Stygian Resurge

  • AoE
  • 15 Toughness
Acheron Quadrivalent Ascendance — technique icon | Honkai: Star Rail
Technique

Quadrivalent Ascendance

  • 60 Toughness

Immediately attacks the enemy. At the start of each wave, gains Quadrivalent Ascendance, dealing Lightning DMG equal to 200% of Acheron's ATK to all enemies and reducing Toughness of all enemies irrespective of Weakness Types. When breaking Weaknesses, triggers the Lightning Weakness Break effect. Quadrivalent Ascendance: After using the Ultimate, Acheron gains 1 point(s) of Slashed Dream and inflicts 1 stack(s) of Crimson Knot on a single random enemy. If attacking a normal enemy, immediately defeats them without entering combat. When not hitting enemies, no Technique Points are consumed.

Bonus Abilities

  1. Acheron Red Oni — Bonus Ability icon | Honkai: Star RailA2

    Red Oni

    When battle starts, immediately gains 5 point(s) of Slashed Dream and applies 5 stack(s) of Crimson Knot to a random enemy. When Slashed Dream reaches its upper limit, for every point of Slashed Dream that exceeds the limit, gains 1 stack of Quadrivalent Ascendance. Enables Quadrivalent Ascendance to stack up to 3 time(s).

  2. Acheron The Abyss — Bonus Ability icon | Honkai: Star RailA4

    The Abyss

    When there are 1 or 2 Nihility characters other than Acheron in the team, the DMG dealt by Acheron's Basic ATK, Skill, and Ultimate increases to 115% or 160% of the original DMG respectively.

  3. Acheron Thunder Core — Bonus Ability icon | Honkai: Star RailA6

    Thunder Core

    When the Ultimate's Rainblade hits enemy targets that have Crimson Knot, the DMG dealt by Acheron increases by 30%, stacking up to 3 time(s) and lasting for 3 turn(s). And when Stygian Resurge triggers, additionally deals DMG for 6 times. Each time deals Lightning DMG equal to 25% of Acheron's ATK to a single random enemy and is considered as Ultimate DMG.

Stat traces

ATK
28.0%
CRIT DMG
24.0%
Lightning DMG
8.0%

Totals at full unlock, summed across every node of that stat. Ascension rank gates the nodes as it gates the Bonus Abilities above.

Full bill

Level 80 and every ability maxed

2,265,500

Credits 12 material lines

Ascension to 80

308,000

Credits 4 materials · 6 steps

All 3 abilities maxed

1,957,500

Credits 3× the single-ability bill

Ascension

  1. Lv 30
    Dream Collection Component — ascension material | Honkai: Star RailDream Collection Component ×5

    4,000Credits

  2. Lv 40
    Dream Collection Component — ascension material | Honkai: Star RailDream Collection Component ×10

    8,000Credits

  3. Lv 50
    Shape Shifter's Lightning Staff — ascension material | Honkai: Star RailShape Shifter's Lightning Staff ×3
    Dream Flow Valve — ascension material | Honkai: Star RailDream Flow Valve ×6

    16,000Credits

  4. Lv 60
    Shape Shifter's Lightning Staff — ascension material | Honkai: Star RailShape Shifter's Lightning Staff ×7
    Dream Flow Valve — ascension material | Honkai: Star RailDream Flow Valve ×9

    40,000Credits

  5. Lv 70
    Dream Making Engine — ascension material | Honkai: Star RailDream Making Engine ×6
    Shape Shifter's Lightning Staff — ascension material | Honkai: Star RailShape Shifter's Lightning Staff ×20

    80,000Credits

  6. Lv 80
    Dream Making Engine — ascension material | Honkai: Star RailDream Making Engine ×9
    Shape Shifter's Lightning Staff — ascension material | Honkai: Star RailShape Shifter's Lightning Staff ×35

    160,000Credits

Total to level 80

308,000 Credits

Dream Making Engine — ascension material | Honkai: Star RailDream Making Engine ×15
Shape Shifter's Lightning Staff — ascension material | Honkai: Star RailShape Shifter's Lightning Staff ×65
Dream Flow Valve — ascension material | Honkai: Star RailDream Flow Valve ×15
Dream Collection Component — ascension material | Honkai: Star RailDream Collection Component ×15

Trace materials

  1. → 2
    Dream Collection Component — ascension material | Honkai: Star RailDream Collection Component ×3

    2,500Credits

  2. → 3
    Dream Collection Component — ascension material | Honkai: Star RailDream Collection Component ×6
    Fiery Spirit — ascension material | Honkai: Star RailFiery Spirit ×3

    5,000Credits

  3. → 4
    Dream Flow Valve — ascension material | Honkai: Star RailDream Flow Valve ×3
    Starfire Essence — ascension material | Honkai: Star RailStarfire Essence ×3

    10,000Credits

  4. → 5
    Dream Flow Valve — ascension material | Honkai: Star RailDream Flow Valve ×4
    Starfire Essence — ascension material | Honkai: Star RailStarfire Essence ×5

    20,000Credits

  5. → 6
    Dream Flow Valve — ascension material | Honkai: Star RailDream Flow Valve ×6
    Starfire Essence — ascension material | Honkai: Star RailStarfire Essence ×7

    30,000Credits

  6. → 7
    Dream Making Engine — ascension material | Honkai: Star RailDream Making Engine ×3
    Heaven Incinerator — ascension material | Honkai: Star RailHeaven Incinerator ×3

    45,000Credits

  7. → 8
    Dream Making Engine — ascension material | Honkai: Star RailDream Making Engine ×4
    Heaven Incinerator — ascension material | Honkai: Star RailHeaven Incinerator ×5
    Past Evils of the Borehole Planet Disaster — ascension material | Honkai: Star RailPast Evils of the Borehole Planet Disaster ×1

    80,000Credits

  8. → 9
    Tracks of Destiny — ascension material | Honkai: Star RailTracks of Destiny ×1
    Heaven Incinerator — ascension material | Honkai: Star RailHeaven Incinerator ×8
    Past Evils of the Borehole Planet Disaster — ascension material | Honkai: Star RailPast Evils of the Borehole Planet Disaster ×1

    160,000Credits

  9. → 10
    Tracks of Destiny — ascension material | Honkai: Star RailTracks of Destiny ×1
    Heaven Incinerator — ascension material | Honkai: Star RailHeaven Incinerator ×14
    Past Evils of the Borehole Planet Disaster — ascension material | Honkai: Star RailPast Evils of the Borehole Planet Disaster ×1

    300,000Credits

One ability maxed

652,500 Credits

Tracks of Destiny — ascension material | Honkai: Star RailTracks of Destiny ×2
Dream Making Engine — ascension material | Honkai: Star RailDream Making Engine ×7
Heaven Incinerator — ascension material | Honkai: Star RailHeaven Incinerator ×30
Past Evils of the Borehole Planet Disaster — ascension material | Honkai: Star RailPast Evils of the Borehole Planet Disaster ×3
Dream Flow Valve — ascension material | Honkai: Star RailDream Flow Valve ×13
Starfire Essence — ascension material | Honkai: Star RailStarfire Essence ×15
Dream Collection Component — ascension material | Honkai: Star RailDream Collection Component ×9
Fiery Spirit — ascension material | Honkai: Star RailFiery Spirit ×3

All 3 abilities maxed

1,957,500 Credits

Tracks of Destiny — ascension material | Honkai: Star RailTracks of Destiny ×6
Dream Making Engine — ascension material | Honkai: Star RailDream Making Engine ×21
Heaven Incinerator — ascension material | Honkai: Star RailHeaven Incinerator ×90
Past Evils of the Borehole Planet Disaster — ascension material | Honkai: Star RailPast Evils of the Borehole Planet Disaster ×9
Dream Flow Valve — ascension material | Honkai: Star RailDream Flow Valve ×39
Starfire Essence — ascension material | Honkai: Star RailStarfire Essence ×45
Dream Collection Component — ascension material | Honkai: Star RailDream Collection Component ×27
Fiery Spirit — ascension material | Honkai: Star RailFiery Spirit ×9

Acheron’s Eidolons

  1. Acheron E1 Silenced Sky Spake Sooth — Eidolon | Honkai: Star RailE1

    Silenced Sky Spake Sooth

    When dealing DMG to debuffed enemies, increases CRIT Rate by 18%.

  2. Acheron E2 Mute Thunder in Still Tempest — Eidolon | Honkai: Star RailE2

    Mute Thunder in Still Tempest

    The number of Nihility characters required for the Trace "The Abyss" to achieve its highest possible effect is reduced by 1. When this unit's turn starts, gains 1 point of Slashed Dream and inflicts 1 stack of Crimson Knot on the enemy with the most Crimson Knot stacks.

  3. Acheron E3 Frost Bites in Death — Eidolon | Honkai: Star RailE3

    Frost Bites in Death

    Ultimate Lv. +2, up to a maximum of Lv. 15. Basic ATK Lv. +1, up to a maximum of Lv. 10.

  4. Acheron E4 Shrined Fire for Mirrored Soul — Eidolon | Honkai: Star RailE4

    Shrined Fire for Mirrored Soul

    When enemy targets enter combat, inflicts them with the Ultimate DMG Vulnerability, increasing the amount of Ultimate DMG they take by 8%.

  5. Acheron E5 Strewn Souls on Erased Earths — Eidolon | Honkai: Star RailE5

    Strewn Souls on Erased Earths

    Skill Lv. +2, up to a maximum of Lv. 15. Talent Lv. +2, up to a maximum of Lv. 15.

  6. Acheron E6 Apocalypse, the Emancipator — Eidolon | Honkai: Star RailE6

    Apocalypse, the Emancipator

    Increases the All-Type RES PEN for the Ultimate DMG dealt by Acheron by 20%. The DMG dealt by Basic ATK and Skill will also be considered as Ultimate DMG and can Reduce enemy Toughness regardless of Weakness Types. When breaking Weaknesses, triggers the Lightning Weakness Break effect.

Acheron FAQ

What Combat Type is Acheron?
Acheron is a 5-star Lightning character on the Path of Nihility, from Galaxy Ranger, released in version 2.1.
What stat does Acheron scale on?
Acheron's abilities multiply ATK. That is read from the scaling rows on the Skill and Ultimate, not from the ability description, so it reflects what the game actually multiplies rather than what the text mentions.
What is the best Light Cone for Acheron?
Why Does the Ocean Sing is the closest fit on the data: it is a 5-star Nihility Light Cone with 635 base ATK at level 80, and its passive acts on ATK. Before the Tutorial Mission Starts is the best 4-star alternative.
Which relic set should Acheron use?
Band of Sizzling Thunder. Its 2-piece bonus is: Increases Lightning DMG by 10%. Its 4-piece bonus is: When the wearer uses their Skill, increases the wearer's ATK by 20% for 1 turn(s).
Which Planar Ornament should Acheron use?
Sprightly Vonwacq. Its 2-piece bonus is: Increases the wearer's Energy Regeneration Rate by 5%. When the wearer's SPD reaches 120 or higher, the wearer's action is Advanced Forward by 40% immediately upon entering battle. Planar Ornaments have no 4-piece bonus; the sphere and the rope are the whole set.
How much does it cost to max Acheron's traces?
Taking one ability from level 1 to 10 costs 652,500 Credits and 2× Tracks of Destiny among other materials. The Materials tab lists every item per level.
What does Acheron E1 do?
Silenced Sky Spake Sooth: When dealing DMG to debuffed enemies, increases CRIT Rate by 18%.
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