Honkai: Star Rail Acheron Build Guide: Best Light Cones, Relics, Team Comps & Playstyle

Acheron, the 5-star Lightning Nihility character in Honkai: Star Rail, redefines hypercarry DPS with her "Remnant Dreams" mechanic and devastating Ultimate burst. As a glass cannon requiring strategic team synergy, this guide covers optimal builds, rotations, and strategies to maximize her potential as a top-tier damage dealer.  

1. Skill Priority & Talent Breakdown  

- Ultimate (Q) > Talent > Skill (E) > Basic Attack   

  - Ultimate (Q): Acheron’s core ability, consuming 9 Remnant Dreams to unleash massive multi-hit Lightning DMG. Prioritize maxing this first.  

  - Talent: Grants "Crimson Petals" stacks (up to 9) when allies apply debuffs, boosting Ultimate DMG. Level second for higher damage scaling.  

  - Skill (E): Applies debuffs and generates 1 Remnant Dream per use. Upgrade for faster Ultimate uptime.  

  - Basic Attack: Low priority; only used for emergency Skill Point generation.  

Key Mechanics  

- Remnant Dreams: Gained when allies apply debuffs (1 per action, max 9). Ultimate requires 9 stacks to activate.  

- Crimson Petals: Each stack increases Ultimate DMG by 12% (max 108%). Prioritize debuff-heavy teams.  

2. Light Cone Recommendations  

Best-in-Slot  

- Along the Passing Shore (5★): Signature Light Cone. Boosts CRIT DMG by 36% and grants "Bubble" debuff (counts as a debuff for Remnant Dreams). Essential for maximizing burst potential.  

- Good Night and Sleep Well (4★): F2P-friendly option. Increases DMG by 24–72% based on enemy debuff count.  

Alternatives  

- Patience Is All You Need (5★): Provides SPD buffs and applies "Threaded" debuff, synergizing with DoT teams.  

- Resolution Shines As Pearls of Sweat (4★): Applies DEF shred, enhancing team-wide DPS.  

3. Relic Sets & Stats  

Optimal Relic Combos  

- 4pc Pioneer Diver of Dead Waters + 2pc Izumo Gensei and Takama Divine Realm   

  - 4pc Pioneer: Increases DMG by 12% against debuffed enemies; doubles CRIT DMG if enemies have ≥3 debuffs.  

  - 2pc Izumo: Boosts ATK by 12% and CRIT Rate by 8% with Nihility allies.  

Main Stats  

- Body: CRIT DMG/Rate (aim for 70% CRIT Rate).  

- Feet: SPD (135+ for action advantage) or ATK%.  

- Planar Sphere: Lightning DMG%.  

- Link Rope: ATK% or Energy Regeneration (if lacking debuff support).  

- Substats: CRIT > SPD > ATK% > Effect HIT (for non-guaranteed debuffs).  

4. Team Compositions  

Acheron thrives in teams that apply frequent debuffs to fuel her Ultimate:  

Meta Triple Nihility Team  

- Acheron + Silver Wolf + Pela + Sustain (Fu Xuan/Aventurine)  

  - Silver Wolf/Pela: Apply DEF shred and debuffs for Remnant Dreams.  

  - Fu Xuan: Provides CRIT Rate boost and survivability.  

Hypercarry Speed Team  

- Acheron + Sparkle + Ruan Mei + Sustain  

  - Sparkle/Ruan Mei: Boost SPD, CRIT DMG, and Break Efficiency for faster rotations.  

F2P-Friendly Team  

- Acheron + Guinaifen + Asta + Lynx  

  - Guinaifen: Applies Burn for consistent debuffs.  

  - Asta: Buffs SPD and ATK.  

5. Eidolon (Constellation) Highlights  

- E1: +18% CRIT Rate against debuffed enemies. Reduces relic pressure.  

- E2: Allows 2 non-Nihility allies while retaining full "Abyssal Echo" DMG buffs. Enables flexible team-building.  

- E6: Ultimate gains 50% DEF ignore and treats all enemies as Lightning-weak. Game-changing for endgame.  

Priority: E0 > E2 > E6.  

6. Ascension & Trace Materials  

Ascension (Lv. 80)  

| Material              | Quantity |  

|---------------------------|--------------|  

| Extinguished Core         | ×15          |  

| Suppressing Edict         | ×28          |  

| Shape of Celestial (Boss) | ×46          |  

Trace Upgrades  

- Tracks of Destiny: ×8  

- Key of Inspiration: ×12  

- Credit Cost: ~3,000,000.  

7. Playstyle & Rotation Tips  

1. Pre-Burst Setup: Use supports to apply debuffs (e.g., Silver Wolf’s Skill) → Swap to Acheron.  

2. Ultimate Burst: Activate Ultimate at 9 Remnant Dreams for max DMG. Prioritize enemies with ≥3 debuffs.  

3. Energy Management: Pair with "Pioneer Diver" set and Energy Regeneration supports for 2-turn Ultimates.  

4. Survivability: Use shields/healers (Fu Xuan, Aventurine) to offset her low HP.