Acheron Guide and Best Builds

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Introductions

Acheron is a 5-Star Lightning Character following the Path of Nihility. Acheron is an excellent DPS who excels at dealing AoE DMG to enemies through heavy use of her Ultimate, while also being able to self-buff through team synergies with Nihility allies.
Our Acheron Build Guide will show you the best Light Cones, Relics, and Team Compositions to help you build the best Acheron.

Acheron's Best Light Cone

Listed below are the Light Cones we recommend for Acheron.

Along the Passing Shore
S1

Increases the wearer's CRIT DMG by 36.0 / 42.0 / 48.0 / 54.0 / 60.0%. When the wearer hits an enemy target, inflicts Mirage Fizzle on the enemy, lasting for 1 turn. Each time the wearer attacks, this effect can only trigger 1 time on each target. The wearer deals 24.0 / 28.0 / 32.0 / 36.0 / 40.0% increased DMG to targets afflicted with Mirage Fizzle, and the DMG dealt by Ultimate additionally increases by 24.0 / 28.0 / 32.0 / 36.0 / 40.0%.

Sources: Event Warp (limited)

Along the Passing Shore is Acherons signature Light Cone and currently her best option through the sheer amount of DMG it produces. It allows her to apply an additional debuff, increasing the amount of Slashed Dream produced, ultimately enhancing the amount of DMG her Ultimate deals.

Incessant Rain
S1

Increases the wearer's Effect Hit Rate by 24.0 / 28.0 / 32.0 / 36.0 / 40.0%. When the wearer deals DMG to an enemy that currently has 3 or more debuffs, increases the wearer's CRIT Rate by 12.0 / 14.0 / 16.0 / 18.0 / 20.0%. After the wearer uses their Basic ATK, Skill, or Ultimate, there is a 100% base chance to implant Aether Code on a random hit target that does not yet have it. Targets with Aether Code receive 12.0 / 14.0 / 16.0 / 18.0 / 20.0% increased DMG for 1 turn.

Sources: Event Warp (limited)

Incessant Rain provides a Vulnerability debuff on hit, allowing Acheron to deal increased DMG, but it's a limited option in the sense that the debuff is applied only after the attack and only affects one target, making it a slightly more restrictive option.

Holiday Thermae Escapade
S5

Increases the wearer's DMG dealt by 16.0 / 20.0 / 24.0 / 28.0 / 32.0%. After the wearer attacks, there is a 100% base chance to inflict the attacked target with Vulnerability, increasing the DMG they receive by 10.0 / 11.5 / 13.0 / 14.5 / 16.0% for 2 turn(s). Effects of the same type cannot stack.

Sources: Nameless Glory

Holiday Thermae Escapade is decent option for Acheron since it increases overall DMG dealt as well as inflicting Vulnerability on an enemy helping Acheron stack Slashed Dream slightly faster.

Good Night and Sleep Well
S5

For every debuff the target enemy has, the DMG dealt by the wearer increases by 12.0 / 15.0 / 18.0 / 21.0 / 24.0%, stacking up to 3 time(s). This effect also applies to DoT.

Sources: Stellar Warp

Since Acheron needs allies that apply debuffs Goodnight Sleep Well will continuously provide Acheron with increased DMG up to a total of 72% at S5.

Boundless Choreo

Increase the wearer's CRIT Rate by 8.0 / 10.0 / 12.0 / 14.0 / 16.0%. The wearer deals 24.0 / 30.0 / 36.0 / 42.0 / 48.0% more CRIT DMG to enemies that are currently Slowed or have reduced DEF.

Sources: Event Warp (limited)

Best Relics and Planar Ornaments for Acheron

Best Relics for Acheron

These are the best Relic sets for Acheron.

Eagle of Twilight Line

2-Piece Set: Increases Wind DMG by 10.0%.

4-Piece Set: After the wearer uses their Ultimate, their action is Advanced Forward by 25.0%.

Eagle of Twilight Line is the best set for Acheron to maximise her damage. Eagle helps Acheron to build up her Slashed Dream stacks faster by taking additional turns while cycling her turns more quickly through the 25% action advance when she uses her Ultimate.

Pioneer Diver of Dead Waters

2-Piece Set: Increases DMG dealt to enemies with debuffs by 12.0%.

4-Piece Set: Increases CRIT Rate by 4.0%. The wearer deals 8.0%/12.0% increased CRIT DMG to enemies with at least 2/3 debuffs. After the wearer inflicts a debuff on enemy targets, the aforementioned effects increase by 100%, lasting for 1 turn(s).

This 4-piece set is great for Acheron as it increases her overall DMG as well as her CRIT Rate and CRIT DMG when enemies have been inflicted with a debuff. This relic set works perfectly with her as Acheron wants lots of debuffs.

Best Planar Ornaments

Izumo Gensei and Takama Divine Realm

2-Piece Set: Increases the wearer's ATK by 12.0%. When entering battle, if at least one teammate follows the same Path as the wearer, then the wearer's CRIT Rate increases by 12.0%.

This is a great choice for Acheron, as it increases her ATK as well as CRIT Rate if another ally follows the same Path. This works well as Acheron intends to have at least 2 other Nihility allies in her team during a battle.

Inert Salsotto

2-Piece Set: Increases the wearer's CRIT Rate by 8.0%. When the wearer's current CRIT Rate reaches 50.0% or higher, the DMG dealt by the wearer's Ultimate and Follow-Up ATK increases by 15.0%.

Another great option for Acheron that increases her CRIT Rate, Follow-Up ATK and Ultimate DMG.

Acheron's Stat Priority

Body

CRIT Rate

CRIT DMG

Feet

ATK

Planar Sphere

ATK

Lightning DMG Boost

Link Rope

ATK

Stat Priority

CRIT Rate

CRIT DMG

ATK

SPD

Recommended Endgame Stats for Acheron

3100+

DEF

900+

ATK

3650-3750+

SPD

Base SPD

CRIT DMG

180-200+

CRIT Rate

70+

Traces Priority

Skills Priority

Ultimate > Skill > Talent > Basic

Major Traces Priority

The Abyss> Thunder Core> Red Oni

Acheron Build Comments

Character Synergy Character Overview

Character Synergy

When building a team for Acheron, you should prioritise characters from the Path of Nihility. This is because her A4 ability provides an additional DMG multiplier when paired with one or two other Nihility allies, significantly increasing her damage output.

In addition, Nihility characters are particularly valuable as they can consistently apply debuffs to enemies, generating Slashed Dream stacks and applying Crimson Knot. These are essential for building towards Acheron's Ultimate and maximising its damage.

Ideally, teammates should be able to apply debuffs frequently, allowing Acheron to activate her Ultimate more often. Since her Ultimate ignores enemy Weakness Types, team building should focus on consistent debuff application rather than elemental coverage.

Character Overview

Acheron is primarily a powerful Main DPS who deals significant AoE DMG, with the majority of her damage coming from her Ultimate. Unlike most characters, her Ultimate does not rely on traditional Energy regeneration and instead requires 9 Slashed Dream stacks to activate. These stacks are generated through Acheron's Skill and when teammates apply debuffs to enemies.

Her damage is further increased by Crimson Knot stacks, which enhance the attacks within her Ultimate. As a result, Acheron relies heavily on teammates who can consistently apply debuffs, enabling her to build Slashed Dream faster and maximise the frequency and damage of her Ultimate.

Acheron's Best Teams

To learn all about Acheron's synergies and best team compositions, check our dedicated Acheron team page below:

Acheron Teams

Acheron's Best Eidolons

When it comes to the best Eidolons to focus on for Acheron, the most important one is her E2. Acheron's E2 lowers her team restriction by reducing the number of Nihility allies needed to trigger her A4 bonus from two to one. This gives her much more flexibility in team building, allowing you to include a different support instead while still maintaining her full DMG potential.

Acheron's Affinitive Eidolon, A Glance Through Rime to Bone, provides a significant improvement to her overall damage output while further strengthening her stack generation.

The Affinitive Eidolons Follow-Up ATK provides additional AoE DMG, allowing her to deal damage outside of her Ultimate while also contributing towards her next one. The additional Slashed Dream and Crimson Knot stacks work particularly well with her existing kit, as they help accelerate her Ultimate rotation and increase the damage dealt through her Rainblade attacks.

Furthermore, the additional stacks create stronger synergy with teammates who can frequently attack enemies affected by Crimson Knot, allowing Acheron to benefit from both their attacks and her own additional damage.

Holster

Guide Author

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Holster is a passionate gacha gamer who spends her time exploring the worlds of Genshin Impact and Honkai: Star Rail. Whether she's pulling for her favorite characters, building new team comps or exploring what the game has to offer.