Best Acheron Honkai Star Rail build: Relics, Light Cones, team comp, & more

Acheron is a 5-star Lightning Nihility unit in Honkai Star Rail who is set to receive a rerun in version 2.6.

Acheron is one of the most hyped units in Honkai Star Rail. She is the Raiden Mei of this game and has direct parallels to her version in Honkai Impact 3rd. Therefore, Acheron is a must-have for both new players and veterans in the Honkai franchise.

However, apart from the lore, she is one the strongest DPS units in the game alongside Feixiao and Firefly. Her damage ceiling is the new peak and she is set to define the meta in the days to come. Therefore, unless you have been using your Stellar Jades elsewhere, Acheron is a must-have, no matter how you look at it.

As always, you need to build her as well and we have you covered.

Best Acheron build in Honkai Star Rail

Light Cone	Relic	Ornament	Stats	Team Comp
Along the Passing Shore	Pioneer Diver of the Dead Waters	Izumo Gensei and Takama Divine Realm	Feet: SPD Body: Crit DMG Sphere: Lightning DMG Bonus Rope: ATK% Substats: Crit DMG, Crit Rate, ATK%, SPD	Gallagher, Acheron, Silver Wolf, Jiaoqiu

Best Light Cone

The best Light Cone for Acheron in Honkai Star Rail is Along the Passing Shore. This Light Cone increases the Crit DMG by 36%-60%. Upon hitting an enemy, the target will inflict Mirage Fizzle that lasts for 1 turn. Each time the wearer attacks, this effect can only trigger 1 time on each target.

The wearer will deal 24% increased DMG to all targets affected by Mirage Fizzle, and the damage from the Ultimate will be further enhanced by 24%-40%. The only way you can get access to this Light Cone is if you pull in the Light Cone event warp.

The problem with Acheron is that if you do not have this Light Cone, then Acheron will suffer quite a lot. The best 4-star option you have is Good Night, Sleep Well, but you need that at Refinement 5. Even then, the damage will be nowhere close to the signature 5-star Light Cone.

The damage numbers you will notice when using both Light Cones have been listed below:

• Acheron with 5-star signature Light Cone (Superposition 1): 1,987,396
• Acheron with 4-star Good Night, Sleep Well (Superposition 5): 1,747,735

Therefore, the damage fall-off for the 4-star Light Cone is around 239,661 which is a 13.8% difference. This difference will cause major issues when playing in the Memory of Chaos or the highest-difficulty versions of the Simulated Universe where enemies are significantly tanky.

Best Relic and Ornament set

Relic

Acheron’s best Relic set in Honkai Star Rail is Pioneer Diver of the Dead Waters. The reason behind using this Relic set is that it synergizes the best with Acheron. The set bonus for this Relic set are as follows:

• 2-piece bonus: Increases DMG dealt to enemies with debuffs by 12%.
• 4-piece bonus: Increases Crit Rate by 4%. The wearer deals 8%/12% Crit DMG to enemies with at least 2/3 debuffs. After the wearer inflicts a debuff on an enemy target, the aforementioned effects increase by 100% for 1 turn.

Therefore, the more Nihility units you have in the team, the more damage Acheron will deal while wearing this artifact set. This matches the requirements for Acheron with regard to setting up her best team.

Ornament

The best Ornament set for Acheron in Honkai Star Rail is Izumo Gensei and Takama Divine Realm. The set bonus for this Ornament set has been discussed below:

• 2-piece: Increases the wearer’s ATK by 12%. When entering a battle, if at least one other ally follows the same Path as the wearer, then the wearer’s Crit Rate increases by 12%.

This Ornament set demands that you run one more Nihility unit alongside Acheron while entering battle.

Ascension and Trace level-up materials

Ascension

Acheron in Honkai Star Rail needs Dream Collection Component and its upgrades and Shape Shifter’s Lightning Staff. The exact number of materials she needs is as follows:

• Dream Collection Component x15
• Dream Flow Valve x15
• Dream Making Engine x15
• Shape Shifter’s Lightning Staff x65

Trace level-up

Acheron’s Traces in Honkai Star Rail need Fiery Spirit and its upgrades, Dream Collection Component and its upgrades, and Past Evils of the Borehole Planet Disaster. The exact number of materials she needs is as follows:

• Fiery Spirit x18
• Starfire Essence x69
• Heaven Incinerator x139
• Dream Collection Component x41
• Dream Flow Valve x56
• Dream Making Engine x58
• Past Evils of the Borehole Planet Disaster x12

Best team comp for Acheron in Honkai Star Rail

There are a number of teams you can run when using Acheron in Honkai Star Rail. However, your team flexibility will depend on the number of Eidolons you have.

Best Team Comp at Eidolon 0

If you are at Eidolon 0, you will need to run two Nihility units alongside Acheron to trigger her Bonus ability “The Abyss”. In case you are unaware, this Bonus Ability grants Acheron 115%/160% damage depending upon whether you have one or two additional Nihility units alongside Acheron.

Thus, the best team at Eidolon 0 comprises of Gallagher, Acheron, Silver Wolf, and Jiaoqiu. In this team, Gallagher is the sustain and he can provide heals indirectly to the entire team with his Ultimate ability. He synergizes the best with Acheron’s kit and is the best healer in this scenario.

Silver Wolf can help reduce enemy defenses while Jiaoqiu increases the damage of Acheron’s Ultimate. This team can effortlessly hit over 2 million damage in Memory of Chaos and is one of the strongest parties you can use in the game.

If you lack Jiaoqiu, you can also use Pela with the Light Cone Resolution Shines As Pearls of Sweat. This makes her SP positive and ensures that the rest of the team can use their skills optimally. Ideally, there isn’t a replacement for Silver Wolf, but you can run Black Swan if you lack the former.

Best Team comp for Acheron at Eidolon 2

If you have Eidolon 2, you don’t need to run two Nihility units beside Acheron. In this case, the best team to go for is Acheron, Gallagher, Sparkle, and Jiaoqiu. It is vital to mention here that Sparkle is quite possibly the best support for Acheron as she enhances damage output by several folds. If you lack Jiaoqiu, you can always use Pela.

The difference between running Sparkle at Eidolon 2 and running Pela or Black Swan is around 300,000. Once Sparkle gets into the team, Acheron’s damage jumps up to around 2,100,000 with a Superposition 1 5-star Signature Light Cone. In perspective, you can expect a 15%-17% buff when Sparkle joins the team.

You can also run Bronya, but her buffs are not as substantial as Acheron. Ruan Mei is not that good of a choice since Acheron needs Crit boosts, but Ruan Mei’s kit revolves around Break Effect and reducing Weaknesses on enemies. This team can function in both Memory of Chaos, and Pure Fiction.

Acheron abilities

Basic Attack

ABILITY NAME	DESCRIPTION
Trilateral Wiltcross	Deals Lightning DMG equal to 50% Acheron’s ATK to a single enemy.

Skill

ABILITY NAME	DESCRIPTION
Octobolt Flash	Gains 1 point(s) of Slashed Dream. Inflicts 1 stack(s) of Crimson Knot on a single target enemy, dealing Lightning DMG equal to 80%-160% of Acheron’s ATK to this target, as well as Lightning DMG equal to 30%-60% of Acheron’s ATK to adjacent targets.

Ultimate

ABILITY NAME

DESCRIPTION

Slashed Dream Cries in Red

Sequentially unleash Rainblade 3 times and Stygian Resurge 1 time, dealing Lightning DMG up to 223%-372% of Acheron’s ATK to a single target enemy, as well as Lightning DMG up to 180%-300% of Acheron’s ATK to other targets. Rainblade: Deals Lightning DMG equal to 14%-24% of Acheron’s ATK to a single target enemy and removes up to 3 stacks of Crimson Knot from the target. When Crimson Knot is removed, immediately deals Lightning DMG equal to 9%-15% of Acheron’s ATK to all enemies. For every stack of Crimson Knot removed, the DMG Multiplier for this is additionally increased, up to a maximum of 36%-60%. Stygian Resurge: Deals Lightning DMG equal to 72%-120% of Acheron’s ATK to all enemies and remove all Crimson Knots. Crimson Knot cannot be applied to enemies during the Ultimate.

Talent

ABILITY NAME

DESCRIPTION

Atop Rainleaf Hangs Oneness

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 10%-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 the 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 per every ability usage. 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.

Technique

ABILITY NAME

DESCRIPTION

Quadrivalent Ascendance

Immediately attacks the enemy, and gains Quadrivalent Ascendance at the start of every wave, dealing Lightning DMG equal to 200% of Acheron’s ATK to all enemies and reduces Toughness of all enemies irrespective of Weakness Types. When inflicting Weakness Break, triggers the Lightning Weakness Break effect. Quadrivalent Ascendance: The next time Acheron uses her Ultimate, she gains 1 points of Slashed Dream and inflicts 1 stack(s) of Crimson Knot on a single random enemy. If a normal enemy is attacked, they will be immediately defeated and will not enter combat. The Technique Point is not spent if the attack does not hit an enemy.

Passives

ABILITY NAME	DESCRIPTION
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. Increases the maximum stackable count for Quadrivalent Ascendance to 3.
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.
Thunder Core	When the Rainblade from Acheron’s Ultimate hits enemy targets with Crimson Knot, her DMG 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 viewed as part of the Ultimate DMG.

Acheron Eidolons

• Level 1 – Silence Sky Spake Sooth: The CRIT Rate increases by 18% when dealing DMG to debuffed enemies.
• Level 2 – 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.
• Level 3 – 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.
• Level 4 – Shrined Fire for Mirrored Soul: When enemy targets enter combat, makes them Vulnerable to the Ultimate DMG, increasing the amount of DMG they take from the Ultimate by 8%.
• Level 5 – 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.
• Level 6 – 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 Weakness is broken, triggers the Lightning Weakness Break effect.

Acheron pros and cons in Honkai Star Rail

Acheron is an exceptional unit but she has a few flaws as well. Here are the pros and cons of Acheron in Honkai Star Rail.

Pros	Cons
A new example of damage ceiling	Reliant on her signature Light Cone for optimal damage
Exceptionally strong at Eidolon 0	Requires multiple Nihility units for maximum damage.
Does not have Energy Requirements making it easier to push for higher damage numbers	Hard to build as she requires high Crit Rate and Crit DMG stats
Instakill ability makes exploration and Simulated Universe clears much faster

Acheron Trailer in Honkai Star Rail

On March 26, 2024, HoYoverse released the official trailer for Acheron on their YouTube channel. If you missed it, do not forget to check it out from the link provided below:

This is all you need to learn about Acheron in Honkai Star Rail. If you want to learn more about Honkai Star Rail, check out our guides for codes, Twitch drops, and voice actors.