Honkai: Star Rail Acheron Character Guide

Introduction

Acheron is a DPS character who accumulates charges by inflicting debuffs on enemies to unleash her Ultimate. With her Ultimate, Acheron ignores enemy Weakness Types, drains all enemies' Toughness, and reduces their Type RES. Acheron's Technique can also instantly eliminate some enemy targets during exploration.

Skills Overview

Basic Attack - Trilateral Wiltcross

Deals Lightning DMG equal to 50%—110% of Acheron's ATK to a single target enemy.

Skill - 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%—176% of Acheron's ATK to this target, as well as Lightning DMG equal to 30%—66% of Acheron's ATK to adjacent targets.

Ultimate - Slashed Dream Cries in Red

Sequentially unleash Rainblade 3 times and Stygian Resurge 1 time, dealing Lightning DMG up to 223.2%—401.76% of Acheron's ATK to a single target enemy, as well as Lightning DMG up to 180%—324% of Acheron's ATK to other targets.

Rainblade: Deals Lightning DMG equal to 14.4%—25.92% 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%—16.2% 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 36%—64.8%.
Stygian Resurge: Deals Lightning DMG equal to 72%—129.6% of Acheron's ATK to all enemies and remove all Crimson Knots.
Crimson Knot cannot be applied to enemies during the Ultimate.

Talent - 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%—22%, 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 - Quadrivalent Ascendance

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 Weakness is broken, 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.

Ascension 2 - 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.

Ascension 4 - 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.

Ascension 6 - 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.

Traces Priorities

Ultimate > Talent = Skill > Basic ATK

Recommended Light Cones

1. Along the Passing Shore (5⭐)
2. Incessant Rain (5⭐)
3. Patience Is All You Need (5⭐)
4. In the Name of the World (5⭐)
5. Good Night and Sleep Well (4⭐)

1) Along the Passing Shore (5⭐)

Increases the wearer's CRIT DMG by 36~60%. When the wearer hits the enemy target, inflicts Mirage Fizzle on the enemy, lasting for 1 turn. This effect can be triggered 1 time against each target for every attack the wearer launches. The wearer deals 24~40% more DMG to targets afflicted with Mirage Fizzle, and DMG from the wearer's Ultimate additionally increases by 24~40%.

2) Incessant Rain (5⭐)

Increases the wearer's Effect Hit Rate by 24~40%. When the wearer deals DMG to an enemy that currently has 3 or more debuffs, increases the wearer's CRIT Rate by 12~20%. 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 12~20% increased DMG for 1 turn.

3) Patience Is All You Need (5⭐)

Increases DMG dealt by the wearer by 24~40%. After every attack launched by the wearer, their SPD increases by 4.8~8.0%, stacking up to 3 times. If the wearer hits an enemy target that is not affected by Erode, there is a 100% base chance to inflict Erode to the target. Enemies afflicted with Erode are also considered to be Shocked and will receive Lightning DoT at the start of each turn equal to 60~100% of the wearer's ATK, lasting for 1 turn.

4) In the Name of the World (5⭐)

Increases the wearer's DMG to debuffed enemies by 24~40%. When the wearer uses their Skill, the Effect Hit Rate for this attack increases by 18~30%, and ATK increases by 24~40%.

5) Good Night and Sleep Well (4⭐)

For every debuff the target enemy has, the DMG dealt by the wearer increases by 12~24%, stacking up to 3 time(s). This effect also applies to DoT.

Recommended Relics & Planar Set

1. Relics
   • Pioneer Diver of Dead Waters
   • Band of Sizzling Thunder
2. Planar Set
   • Izumo Gensei and Takama Divine Realm
   • Inert Salsotto

Relic Set (Pioneer Diver of Dead Waters)

2 Piece: Increases DMG dealt to enemies with debuff by 12%.
4 Piece: Increases CRIT Rate by 4%. The wearer deals 8%/12% 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).

Relic Set (Band of Sizzling Thunder)

2 Piece: Increases Lightning DMG by 10%.
4 Piece: When the wearer uses their Skill, increases the wearer's ATK by 20% for 1 turn(s).

Planetary Set (Izumo Gensei and Takama Divine Realm)

2 Piece: Increases the wearer's ATK by 12%. When entering battle, if at least one other ally follows the same Path as the wearer, then the wearer's CRIT Rate increases by 12%.

Planetary Set (Inert Salsotto)

2 Piece: Increases the wearer's CRIT Rate by 8%. When the wearer's current CRIT Rate reaches 50% or higher, the wearer's Ultimate and follow-up attack DMG increases by 15%.

Team Recommendations

F2P Team

Acheron: Main DPS
Guinaifen / Luka / Sampo: Nihility Slot
Pela: Nihility Slot + Debuffer
Gallagher: Healer

Premium Team

Acheron: Main DPS
Silver Wolf: Nihility Slot + Debuffer
Pela: Nihility Slot + Debuffer
Gepard (Trend of Universal Market LC) / Aventurine / Gallagher: Shielder / Healer

DoT Team

Acheron: Main DPS
Kafka: Nihility Slot
Black Swan: Nihility Slot
Huohuo / Gallagher: Healer

E1S1 Team

Acheron: Main DPS
Silver Wolf / Pela: Nihility Slot + Debuffer
Sparkle: Buffer
Fu Xuan / Aventurine / Gallagher: Shielder / Healer

Eidolons

Best Eidolons: E1, E2 & E6

E1: Silenced Sky Spake Sooth ⭐
CRIT Rate increases by 18% when dealing DMG to debuffed enemies.

E2: 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.

E3: 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.

E4: Shrined Fire for Mirrored Soul
When enemy targets enter combat, afflict them with the Ultimate DMG Vulnerable Vulnerability state, increasing the amount of Ultimate DMG they take by 8%.

E5: 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.

E6: 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.