Honkai Star Rail F2P Super Break Guide: MoC 12 Full-Auto

Memory of Chaos Stage 12 (12/08/2026 - 01/19/2026) clears on full-auto using F2P Super Break teams without premium sustain. This guide covers exact speed thresholds (134-160 SPD), energy requirements (15-30% ERR), and Break Effect targets (30-60%) for Fire and Harmony Trailblazer builds.

Author: BitTopup Publish at: 2026/01/09

Super Break Mechanics in 3.8

Super Break converts Toughness Reduction into direct damage against broken enemies. Scales with Break Effect and Toughness damage dealt.

Harmony Trailblazer's Ultimate grants Backup Dancer buff for 3 turns: +15% Break Effect, converts all Toughness Reduction to Super Break damage. Dance With the One trace adds +20% Super Break damage (5 enemies) scaling to +60% (single target).

Break Effect vs Break Damage: Break Effect depletes Toughness bars faster and amplifies damage. Break Damage only boosts the break instance multiplier. Super Break prioritizes Break Effect for sustained output.

Harmony TB's Skill: 25% ATK Imaginary damage + four 25% ATK hits to random enemies. First hit gets +100% Toughness Reduction (Shuffle Along trace), accelerating initial breaks.

Why Super Break Excels in MoC 12

First Half: Quantum/Lightning weaknesses (The Ascended, Cyclonic Swarm Mother, Stellaron Hunter Sam) Second Half: Physical/Fire weaknesses (Noontide Gryphon, Ichor Memosprite Winged Serpent, Borisin Warhead Hoolay)

Super Break maintains consistent damage regardless of enemy type—focuses on depleting Toughness bars, not matching elements. Imaginary damage applies universal Toughness reduction.

Three-star objectives: Win with ≥10 cycles, ≥20 cycles, no downed characters. Full-auto teams achieve this through constant break pressure.

MoC 12 Enemy Analysis

Floor 12 Bosses and Weaknesses

Honkai Star Rail Memory of Chaos 12 bosses weaknesses chart showing Quantum Lightning Physical Fire enemies

First Half Wave 1: The Ascended + Cyclonic Swarm Mother (summons Mirage Fizzle Kid). Kill Mother first to stop add spawns.

First Half Wave 2: Stellaron Hunter Sam. Consuming Skill Points depletes his Molten Energy meter faster.

Second Half Wave 1: Noontide Gryphon + Ichor Memosprite Winged Serpent (summons Meteoric Eagle).

Second Half Wave 2: Borisin Warhead Hoolay (summons Sableclaw/Eclipse Wolftrooper). Moon Rage triggers Lupine Chase unless you break during this window.

Toughness and Break Timing

Harmony TB's doubled first-hit Toughness Reduction (Shuffle Along) creates immediate breaks against low-Toughness enemies.

Hat of the Theater trace: Delays enemy actions 30% after any Weakness Break. Compounds across multiple breaks, granting bonus turns without speed manipulation.

Core F2P Team Composition

Honkai Star Rail F2P Super Break team: Harmony Trailblazer March 7th Imaginary Asta Gallagher

Harmony Trailblazer: Super Break enabler. Talent grants +5 Energy per enemy Weakness Break—self-sustaining energy loop.

March 7th Imaginary: Imaginary coverage, additional breaks.

Asta: Team-wide speed buffs for breakpoint thresholds.

Gallagher: Sustain + Fire element for Second Half.

Fire Trailblazer: Preservation Path

Level 80 base stats: 1241 HP, 601 ATK, 606 DEF, 95 SPD.

Build targets:

  • 2500-3500 DEF
  • 134+ SPD
  • 30% Effect RES
  • 30% Effect Hit Rate

Relics: Guard of Wuthering Snow 4pc (damage reduction) + Fleet of the Ageless (120+ SPD for ATK buff)

Main stats: DEF% Body/Sphere, SPD or DEF% Feet, ERR or DEF% Rope

Defensive foundation enables full-auto survival without manual shield timing.

Harmony Trailblazer: Break Amplification

Level 80 base stats: 1086 HP, 446 ATK, 679 DEF, 105 SPD.

Technique: +30% party Break Effect for 2 turns at battle start.

Key Eidolons:

  • E1: Recovers 1 SP on first Skill use
  • E2: +25% ERR for first 3 turns
  • E4: Shares 15% of Break Effect with party

Fire Trailblazer Build

Relic Sets and Stats

Honkai Star Rail Fire Trailblazer Guard of Wuthering Snow 4pc relic build

Guard of Wuthering Snow 4pc: +10% damage reduction (2pc), +10% reduction + 10% damage when debuffed (4pc)

Main stat priority:

  • Body: DEF%
  • Feet: SPD (134+) or DEF%
  • Sphere: DEF%
  • Rope: ERR or DEF%

Substats: SPD to 134+ > Effect RES to 30% > DEF%/flat DEF > Effect Hit Rate to 30%

Speed Breakpoints

Honkai Star Rail speed breakpoints chart 134 143 160 SPD for Memory of Chaos

  • 134 SPD: 2 bonus turns across 5 cycles (minimum target)
  • 143 SPD: 2 turns in 1st and 3rd cycles
  • 160 SPD: 4 actions within first 2 cycles

134 SPD ensures consistent shield coverage for full-auto. Higher speeds improve performance but demand better substats.

ERR requirements: 15-20% from Rope + substats for rotation consistency.

F2P Light Cones

Memories of the Past: Break Effect + ERR. Best balance for Super Break teams.

Day One of My New Life: DEF + damage reduction after battle start.

Landau's Choice: Increased aggro + damage reduction (less optimal for auto).

Memories of the Past offers Break Effect synergy with Harmony TB's E4 sharing plus ERR for Ultimate uptime.

Harmony Trailblazer Optimization

Speed Thresholds

  • 120 SPD: 2 turns in 2nd cycle
  • 134 SPD: 2 bonus turns across 5 cycles (F2P target)
  • 143 SPD: 2 turns in 1st and 3rd cycles
  • 160 SPD: 4 actions in first 2 cycles

134 SPD optimal for F2P—maintains Backup Dancer uptime with achievable substats. 145-150 SPD activates Talia Kingdom ornament bonus (+Break Effect at 145+ SPD).

Energy Requirements

Talent generates +5 Energy per Weakness Break. In Super Break teams with constant breaks, this reduces ERR stat needs.

Budget: 15% ERR from substats + Rope Mid-investment: 20-25% ERR for Ultimate every 3-4 turns Whale: 30%+ ERR for near-permanent uptime

Penacony ornament provides ERR bonuses, but Talia Kingdom's Break Effect usually offers better damage scaling.

Relic Sets

Watchmaker Master of Dream Machinations 4pc: +16% Break Effect (2pc), shares 30% of wearer's Break Effect with allies for 2 turns after Ultimate (4pc). Premier choice.

Alternatives:

  • Iron Cavalry: +25% Break Effect (2pc), +25% Break Damage at 150%+ Break Effect (4pc)
  • Thief of Shooting Meteor: +16% Break Effect (2pc), +16% ERR (4pc)

Watchmaker's team-wide buffing outweighs alternatives for full-auto clearing.

Substat Priority

  1. Break Effect: Direct Super Break scaling
  2. SPD: Reach 134/145/160 breakpoints
  3. Effect RES: Debuff resistance
  4. HP%: Survivability

Main stats:

  • Body: DEF%/HP%
  • Feet: SPD
  • Sphere: DEF%/HP%
  • Rope: Break Effect (19.4% at +15) or ERR

Break Effect Rope = 3-4 perfect substats worth of damage.

F2P Light Cones

Past Self in Mirror: Break Effect + party damage/SP regen/ERR. Comprehensive support, optimal F2P choice.

Memories of the Past: Break Effect + ERR. Supports damage and Ultimate uptime.

In Pursuit of the Wind: Party Break Damage after Ultimate. Max damage, no energy support.

Past Self in Mirror balances damage, energy, and SP support—valuable for auto-mode SP consumption patterns.

Speed Tuning Strategy

Action Value and Turn Order

Action Value = 10000 ÷ total SPD. Lower values act first.

Optimal speed distribution:

  • Harmony TB: 134-145 SPD (acts first for buffs)
  • Support/Buffer: 120-130 SPD (secondary buffs)
  • Primary DPS: 110-125 SPD (consumes Toughness after buffs)
  • Fire TB: 134+ SPD (shield uptime)

Ensures Backup Dancer activates before damage dealers begin rotations.

Hat of the Theater's 30% enemy delay after breaks grants bonus team turns without speed changes. Multiple breaks = 2-3 additional actions before enemies act.

Common Mistakes

Over-investing DPS speed while neglecting Harmony TB: Super Break needs Backup Dancer active—Harmony TB turn frequency > DPS speed.

Ignoring breakpoints: 128 SPD performs nearly same as 120 SPD, but 134 SPD grants 2 bonus turns. Always prioritize reaching thresholds.

Inverted priorities: Building Fire TB with 170+ SPD while Harmony TB sits below 134 wastes substats.

Full-Auto Optimization

AI Decision Patterns

Auto-battle AI:

  • Prioritizes Skills over Basic Attacks when SP available
  • Targets type advantage when possible
  • Uses Ultimates immediately at full energy

AI doesn't optimize SP economy for future turns—consumes all available SP. Super Break accommodates this since Harmony TB's Skill provides valuable Toughness damage regardless.

Ultimate timing lacks manual precision. AI activates immediately rather than waiting for optimal windows. Makes always active buffs like Backup Dancer more reliable than conditional buffs.

Skill Point Management

Full-auto requires teams balancing SP generation/consumption. Harmony TB E1 recovers 1 SP on first Skill. Include SP-positive characters using Basic Attacks while contributing through passives/Ultimates.

AI's immediate SP consumption means you can't save points. Build assuming SP spent as available—ensure composition functions with zero SP reserves.

Auto-Friendly Compositions

Prioritize passive effects over active timing. Harmony TB's Backup Dancer activates on Ultimate, persists 3 turns regardless of actions—ideal for auto.

Include sustain with automatic healing triggers. Gallagher's healing activates through attacks, ensuring HP maintenance without AI heal targeting decisions.

Avoid compositions dependent on specific sequences or conditional mechanics requiring manual control. Super Break excels in auto because damage depends on simple break Toughness bar condition occurring naturally.

MoC 12 Clearing Strategy

First Half Deployment

Deploy Super Break team with Quantum/Lightning coverage. AI naturally targets Cyclonic Swarm Mother first (lower Toughness vs The Ascended).

Wave 1: Eliminate Mother before excessive Mirage Fizzle Kid spawns. Harmony TB's doubled first-hit Toughness accelerates initial break. Clear adds before The Ascended.

Wave 2: Sam solo boss. AI consumes SP naturally, depleting Molten Energy without manual management. Maintain Backup Dancer every 3-4 turns, Fire TB shields handle damage.

Second Half Strategy

Requires Physical/Fire damage. Gallagher provides Fire + sustain. March 7th Imaginary contributes universal Toughness damage.

Wave 1: Gryphon + Serpent. AI engages Gryphon first. Backup Dancer converts Toughness to Super Break naturally.

Wave 2: Hoolay requires breaking during Moon Rage to prevent Lupine Chase. AI doesn't time breaks specifically, but consistent Toughness damage naturally triggers breaks during vulnerable windows. Fire TB shields mitigate mistimed breaks.

Expected Turn Counts

First Half Wave 1: 4-6 cycles (Mother 2-3, adds 1-2, Ascended 2-3) First Half Wave 2: 5-7 cycles (Sam) Target: Complete with 12-15 cycles remaining

Second Half Wave 1: 3-5 cycles Second Half Wave 2: 6-8 cycles (Hoolay + summons) Target: Complete with 10-12 cycles remaining

Troubleshooting

Insufficient damage: Verify Harmony TB Break Effect 30%+, Backup Dancer uptime consistent. Check DPS for wasted ATK/CRIT stats. Confirm speed tuning (Harmony TB before DPS).

Survivability issues: Confirm Fire TB 2500+ DEF, 134+ SPD. Consider second sustain if team can't survive to cycle 20.

Energy problems: Increase ERR substats or switch to Penacony ornament. Verify Talent's +5 Energy on break triggering.

Alternative Options

Replacing Harmony Trailblazer

Harmony TB irreplaceable in F2P Super Break—no other accessible character provides Super Break damage conversion. Traditional break teams with Ruan Mei can substitute but lack full-auto consistency.

Only justify replacement if you have Ruan Mei with significantly better investment. Even then, Harmony TB's free availability and guaranteed Eidolons make them superior long-term F2P investment.

Gallagher vs Natasha

Gallagher: Fire damage, healing through attacks, auto-friendly. Fire coverage for Second Half Physical/Fire weaknesses.

Natasha: Straightforward healing but no offensive contribution. Manual target selection—AI handles suboptimally. No elemental coverage.

Gallagher surpasses Natasha in every metric for full-auto Super Break.

Ruan Mei Value

Ruan Mei elevates Super Break to premium performance: party Break Effect, Weakness Break Efficiency, RES PEN. Ultimate delays enemies, extends break duration.

Significant but worthwhile investment if committed to Super Break. Transforms viable F2P strategy to top-tier meta.

Not required for MoC 12 three-stars. F2P composition clears without limited characters. Prioritize after securing 4-stars and adequate relic quality.

Common Mistakes

You Need Fu Xuan for MoC 12

False. Fire TB's Preservation offers sufficient sustain when properly built (2500+ DEF, 134+ SPD). Fu Xuan functions with minimal investment; Fire TB requires targeted farming but achieves comparable performance.

Super Break reduces sustain pressure through constant breaks triggering Hat of the Theater's 30% action delay. Passive mitigation + Fire TB shields rivals premium sustain.

Over-Investing ATK/CRIT on Break Characters

Most damaging mistake: prioritizing ATK/CRIT on characters scaling from Break Effect. Harmony TB's Super Break ignores ATK entirely—ATK% main stats and CRIT substats completely wasted.

Every substat should contribute Break Effect, SPD, ERR, or survivability. ATK/CRIT provide zero value.

Extends to Light Cones: choosing ATK-scaling over Break Effect options sacrifices 30-40% Break Effect for useless stats.

Ignoring Speed Breakpoints

Incremental speed between breakpoints provides minimal value. 132 SPD performs nearly identical to 120 SPD, but 134 SPD grants 2 bonus turns—massive improvement.

Focus speed investment one character at a time, pushing to 134/143/160 thresholds before distributing to others.

Test turn order in lower-difficulty content before MoC 12 attempts.

Neglecting Energy Regeneration

ERR determines Ultimate frequency = Backup Dancer uptime. Players dismiss ERR as nice to have while prioritizing Break Effect/SPD, then wonder why Harmony TB can't maintain buffs.

Talent's +5 Energy on break provides substantial generation but requires enemies to break. High-Toughness bosses or low-enemy waves slow break frequency. ERR substats ensure Ultimate availability during low-break phases.

Minimum: 15% ERR (budget), scaling to 20-25% (mid-investment). Guarantees Ultimate every 3-4 turns regardless of break frequency.

Resource Investment Guide

Leveling Priority

  1. Harmony TB: Level 80, full ascension. Traces: Ultimate > Talent > Bonus Abilities > Skill > Basic Attack
  2. Fire TB: Level 80, full ascension. Prioritize defensive traces
  3. Primary DPS: March 7th Imaginary or elemental coverage character
  4. Sustain: Gallagher/Natasha

Relic Farming Routes

Harmony TB: Watchmaker from Penacony domain (also drops Prisoner for DoT characters). Farm until 4pc with correct main stats.

Fire TB: Guard of Wuthering Snow from Belobog domain (alternative Eagle set benefits Wind DPS). Focus DEF% Body/Sphere, SPD Feet minimum.

Ornaments: Talia Kingdom (Harmony TB) and Fleet of the Ageless (Fire TB) from Simulated Universe. Farm during weekly reset bonuses.

Trace Materials

Harmony TB ascension: 12 Thief's Instinct, 13 Usurper's Scheme, 12 Conqueror's Will, 50 Enigmatic Ectostella, 246,400 Credits.

Trace upgrades: 12 Firmament Note, 28 Thief's Instinct, 54 Celestial Section, 42 Usurper's Scheme, 105 Heavenly Melody, 42 Conqueror's Will, 12 Past Evils, 5 Tracks of Destiny, 2,400,000 Credits.

Prioritize Ultimate/Talent first (largest performance gains). Activate Bonus Abilities immediately. Skill moderate value, Basic Attack minimal.

Long-Term Investment Value

Both Trailblazer paths = permanent account investments never becoming obsolete. Free characters with guaranteed Eidolons through story—unmatched cost-efficiency vs limited banners.

Harmony TB's Super Break remains relevant across all content (MoC, Pure Fiction, Apocalyptic Shadow). Scales with enemy Toughness—maintains effectiveness as endgame difficulty increases.

Fire TB's Preservation eliminates limited sustain dependency (Fu Xuan/Aventurine). Allocate pulls toward DPS/support instead, accelerating progression.

Future-proofs account against new Trailblazer paths. Each new path adds versatility without pulls—highest-value long-term F2P investment.

FAQ

Minimum Harmony TB stats for MoC 12 full-auto?

134 SPD, 15% ERR, 30% Break Effect for budget clears. These ensure 2 bonus turns across 5 cycles, consistent Ultimate uptime, sufficient Super Break scaling. Higher investments (145-160 SPD, 20-30% ERR, 40-60% Break Effect) improve speed but aren't mandatory for three-stars.

Can I replace Fire TB with Natasha?

Fire TB provides superior auto performance: automatic shields, higher defensive stats, better AI compatibility. Natasha's manual heal targeting suffers under auto-battle AI. Gallagher surpasses both—automatic healing through attacks + Fire coverage for Second Half.

Super Break vs traditional CRIT DPS?

Super Break matches/exceeds traditional DPS in content with multiple breakable enemies (MoC 12). Underperforms against single-target bosses with massive HP, small Toughness. For F2P, Super Break offers superior accessibility—no limited characters, scales from farmable Break Effect vs difficult CRIT substats.

Is Ruan Mei necessary for F2P MoC 12 clears?

No. F2P composition (Harmony TB, Fire TB, March 7th Imaginary, Gallagher) achieves full-auto three-stars without limited characters. Ruan Mei transforms viable to top-tier but represents luxury upgrade, not necessity.

Team clears MoC 12 but fails cycle objectives?

Insufficient damage. Verify Harmony TB Break Effect 30%+, Backup Dancer uptime consistent. Check DPS for wasted ATK/CRIT stats (should be Break Effect). Confirm speed tuning (Harmony TB before DPS). Consider replacing sustain with second DPS if survivability isn't limiting.

Relic farming vs character leveling priority?

Prioritize character levels/trace upgrades first—guaranteed stat increases. Farm relics after reaching level 80, completing essential traces. Focus correct main stats (Break Effect Rope, SPD Feet, DEF% Body/Sphere) before perfect substats. Level 80 with mediocre relics > level 70 with perfect relics due to base stat scaling.


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