Acheron is an exciting new 5-star Lightning Nihility unit in Honkai Star Rail who is set to make her rerun debut in version 2.6.
As one of the most anticipated characters in Honkai Star Rail, Acheron draws direct parallels to Raiden Mei from Honkai Impact 3rd, making her a crucial addition for both newcomers and long-time fans of the Honkai franchise.
Beyond her rich lore, Acheron stands out as one of the top DPS units in the game, alongside Feixiao and Firefly. Her damage output is expected to set a new standard, heavily influencing the meta in upcoming updates. Unless you have been allocating your Stellar Jades to other characters, Acheron is essential for any roster, regardless of your gameplay style.
To maximize Acheron’s potential, a solid build is necessary, and we’re here to guide you.
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
Acheron’s Light Cone is essential as she has few viable substitutes.
The ideal Light Cone for Acheron in Honkai Star Rail is Along the Passing Shore. This Light Cone enhances Crit DMG by 36%-60%. When the user hits an enemy, the target receives a Mirage Fizzle debuff lasting for one turn, triggering once per attack.
Additionally, the wearer inflicts 24% more damage on any enemy affected by Mirage Fizzle, while the damage from their Ultimate is boosted further by 24%-40%. You can obtain this Light Cone through the Light Cone event warp.
If you lack this Light Cone, Acheron will struggle significantly. The best 4-star alternative is Good Night, Sleep Well, which requires Refinement 5 to be effective. However, the damage will still fall short compared to her signature 5-star Light Cone.
Here are the damage comparisons between both Light Cones:
- 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
This results in a damage gap of 239,661, equating to a difference of 13.8%. Such discrepancies become particularly problematic in high-difficulty scenarios like the Memory of Chaos or the Simulated Universe, where foes have significantly increased durability.
Best Relic and Ornament Sets
The best Planar Ornament for Acheron is Izumo Gensei and Takama Divine Realm.
Relic
Acheron’s optimal Relic set in Honkai Star Rail is Pioneer Diver of the Dead Waters. This set synergizes perfectly with her abilities. The set bonuses include:
- 2-piece bonus: Increases damage dealt to debuffed enemies by 12%.
- 4-piece bonus: Boosts Crit Rate by 4%. The wearer gains 8%/12% Crit DMG against enemies with 2 or 3 debuffs. After applying a debuff, these effects double for one turn.
Utilizing more Nihility units in the team allows Acheron to maximize damage potential while equipped with this Relic set, which complements her team setup perfectly.
Ornament
The prime Ornament set for Acheron is Izumo Gensei and Takama Divine Realm. The bonuses for this Ornament set are:
- 2-piece: Boosts the wearer’s ATK by 12%. Upon entering battle, if at least one ally shares the same Path as the wearer, the wearer’s Crit Rate increases by 12%.
This set necessitates an additional Nihility unit in combat alongside Acheron for optimal effectiveness.
Ascension and Trace Level-Up Materials
Ascension
Acheron in Honkai Star Rail requires the following materials for ascension: Dream Collection Component and its upgrades, and Shape Shifter’s Lightning Staff. The exact quantities needed are:
- 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 demand Fiery Spirit and its upgrades, Dream Collection Component and its upgrades, and Past Evils of the Borehole Planet Disaster. The required materials include:
- 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
You can form various team compositions when utilizing Acheron in Honkai Star Rail; however, your flexibility will depend on your Eidolon status.
Best Team Comp at Eidolon 0
Gallagher and Silver Wolf synergize exceptionally well with Acheron in Honkai Star Rail.
At Eidolon 0, you should incorporate two Nihility units with Acheron to activate her Bonus ability “The Abyss,” which provides a damage increase of 115%/160% depending on the number of allies.
Thus, the optimal team composition at Eidolon 0 consists of Gallagher, Acheron, Silver Wolf, and Jiaoqiu. In this setup, Gallagher serves as the sustain, indirectly healing teammates with his Ultimate ability. His kit complements Acheron’s abilities perfectly and ensures high team survivability.
Silver Wolf can help reduce enemy defenses while Jiaoqiu amplifies Acheron’s Ultimate damage. This composition can effortlessly exceed 2 million damage in Memory of Chaos, marking it as one of the game’s strongest teams.
If you lack Jiaoqiu, Pela with the Light Cone Resolution Shines As Pearls of Sweat can be a good substitute, as it allows other teammates to use their skills efficiently. While Silver Wolf is irreplaceable, Black Swan can serve as a secondary option if necessary.
Best Team Comp for Acheron at Eidolon 2
Sparkle is an essential addition when Acheron reaches Eidolon 2.
If you have Acheron at Eidolon 2, you no longer need to include two Nihility characters. The best party composition becomes Acheron, Gallagher, Sparkle, and Jiaoqiu. Notably, Sparkle is arguably the best support for Acheron, greatly enhancing overall damage output. Should you lack Jiaoqiu, Pela is a viable alternative.
Incorporating Sparkle can lead to approximately a 15%-17% damage increase of around 2,100,000 with a Superposition 1 5-star Signature Light Cone, making her a game-changing asset.
While you can also include Bronya for team buffs, her contributions are not as significant as Sparkle’s. Ruan Mei is not the best fit since Acheron benefits more from Crit boosts, while Ruan Mei focuses on Break Effects and enemy weaknesses. This team can perform effectively in both Memory of Chaos and Pure Fiction scenarios.
Acheron’s Abilities in Honkai Star Rail
Acheron’s Ultimate unleashes powerful attacks with a series of slashes.
Basic Attack
| Ability Name | Description |
|---|---|
| Trilateral Wiltcross | Deals Lightning DMG equal to 50% of Acheron’s ATK to a single enemy. |
Skill
| Ability Name | Description |
|---|---|
| Octobolt Flash | Gains 1 point of Slashed Dream. Inflicts 1 stack of Crimson Knot on a single target enemy, dealing Lightning DMG equal to 80%-160% of Acheron’s ATK to that target, plus Lightning DMG equal to 30%-60% of Acheron’s ATK to adjacent targets. |
Ultimate
| Ability Name | Description |
|---|---|
| Slashed Dream Cries in Red | Sequentially unleashes Rainblade 3 times and Stygian Resurge 1 time, dealing Lightning DMG ranging from 223%-372% of Acheron’s ATK to a single target enemy and Lightning DMG of 180%-300% to other targets. Rainblade: Deals Lightning DMG equal to 14%-24% of Acheron’s ATK to a single target and removes up to 3 stacks of Crimson Knot from that target. When stacks are removed, it deals additional Lightning DMG equal to 9%-15% of Acheron’s ATK to all enemies, with a maximum damage increase based on removed stacks. Stygian Resurge: Deals Lightning DMG equal to 72%-120% of Acheron’s ATK to all enemies and removes all Crimson Knot stacks. Note: Crimson Knot cannot be applied during the Ultimate. |
Talent
| Ability Name | Description |
|---|---|
| Atop Rainleaf Hangs Oneness | When Slashed Dream reaches 9 points, the Ultimate can be activated. During the Ultimate, it reduces enemies’ Toughness regardless of Weakness Types and decreases all enemies’ All-Type RES by 10%-20%, lasting until the end of the Ultimate. If any unit inflicts debuffs while targeting an enemy, Acheron gains 1 point of Slashed Dream and inflicts 1 stack of Crimson Knot. If multiple targets are debuffed, the stack is applied to the enemy with the highest stack count. This effect can activate once per ability usage. After an enemy exits the field or is defeated, their Crimson Knot stacks transfer to the enemy with the most stacks on the field. |
Technique
| Ability Name | Description |
|---|---|
| Quadrivalent Ascendance | Immediately attacks an enemy, gaining Quadrivalent Ascendance at the start of each wave, dealing Lightning DMG equal to 200% of Acheron’s ATK to all enemies and reducing their Toughness. Triggering Weakness Break activates the Lightning Weakness Break effect. Quadrivalent Ascendance: The next time Acheron uses her Ultimate, she gains 1 point of Slashed Dream and inflicts 1 stack of Crimson Knot on a random enemy. If a normal enemy is targeted, they are defeated instantly without entering combat. The Technique Point is not consumed if the attack misses. |
Passives
| Ability Name | Description |
|---|---|
| Order They | At the start of battle, instantly gains 5 points of Slashed Dream and applies 5 stacks of Crimson Knot to a random enemy. When Slashed Dream reaches its max, exceeding points convert into 1 stack of Quadrivalent Ascendance, with the max stack count raised to 3. |
| The Abyss | When one or two Nihility characters are present beside Acheron, the damage output of her Basic ATK, Skill, and Ultimate increases to 115% or 160%, respectively. |
| Thunder Core | When Rainblade connects with enemies under Crimson Knot, Acheron’s damage increases by 30%, stacking up to 3 times for 3 turns. During Stygian Resurge, she deals extra Lightning DMG equal to 25% of her ATK to a random enemy, considered part of her Ultimate damage. |
Acheron Eidolons in Honkai Star Rail
Acheron can bypass her Bonus Ability The Abyss at Eidolon 2.
- Level 1 – Silence Sky Spake Sooth: CRIT Rate increases by 18% against debuffed enemies.
- Level 2 – Mute Thunder in Still Tempest: Reduces Nihility characters needed for “The Abyss” to reach max efficiency by 1. Gains 1 point of Slashed Dream at the start of her turn, inflicting 1 stack of Crimson Knot on the enemy with the highest target stacks.
- Level 3 – Frost Bites in Death: Ultimate Level +2 (max Level 15), Basic ATK Level +1 (max Level 10).
- Level 4 – Shrined Fire for Mirrored Soul: Enemies entering combat become Vulnerable to Ultimate damage, increasing the damage from Acheron’s Ultimate by 8%.
- Level 5 – Strewn Souls on Erased Earths: Skill Level +2 (max Level 15), Talent Level +2 (max Level 15).
- Level 6 – Apocalypse, the Emancipator: Increases All-Type RES PEN for Acheron’s Ultimate by 20%. Basic ATK and Skill damage count as Ultimate damage 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 outstanding unit with a few noteworthy weaknesses. Here’s a breakdown of Acheron’s strengths and limitations in Honkai Star Rail:
| Pros | Cons |
|---|---|
| Represents a new peak in damage potential | Heavily reliant on her signature Light Cone for optimal performance |
| Extremely powerful at Eidolon 0 | Requires multiple Nihility units for maximum effectiveness |
| No Energy Requirements, enabling higher damage outputs | Challenging to build due to high Crit Rate and Crit DMG requirements |
| Her instakill ability accelerates exploration and sim challenges |
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, be sure to check it out via the link below:
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