English translation in progress. Untranslated passages remain in Japanese.

E.G.O 0209 · HE

Command : Meltdown

FaustGluttonyKal'tsit (Arknights)Collaboration event exclusive

Risk Level: HE
SP Cost: 20/25/38
Resource Cost: Sloth ×1Gluttony ×5Pride ×2E.G.O usable with these resources →
Resistance: ×0.75×2×2×0.5×1×1×1

GUIDEMechanics and How to Use

At a Glance

A Gluttony-heavy healing E.G.O that keeps up Hardened Shell-Barrier to heal allies automatically every turn (collaboration-limited).

Core Mechanics

HP recovery: After the attack, heals herself and the 1 ally with the lowest HP ratio by a percentage of her own max HP, 30% at Threadspin Ⅳ. If her own HP is full, it heals 2 allies.
Hardened Shell-Barrier: Gains Hardened Shell-Barrier after the attack, 10 at Threadspin Ⅳ, up to 10. Right before taking damage, half of it is spent and turned into Protection, but the spent amount also lowers the healing.
Passive — Doctor: At Turn Start, heals allies by (Shield value)% of her max HP. ×1.5 if the target is at 25% HP or less or staggered. If this was the last E.G.O she used, the Shield's Turn End decrease drops from 3 to 1.
SP recovery: Restores SP to the 2 allies with the lowest SP, including herself, 15 at Threadspin Ⅳ.
Offense: Gains Final Power against targets with Rupture or Burn, and more damage based on Rupture. The latter is ×1.5 with Hardened Shell-Barrier, or ×2 at Threadspin Ⅳ.

How to Use

Use it early in the fight, keep the Shield up, and keep the automatic healing running.
Using another E.G.O makes the Shield drop by 3 every turn, so pay attention to the order of use.
The Corrosion skill cannot distinguish friend from foe and does not heal; if it fails to stagger or kill an enemy, she spends her own HP to gain a large Shield, making it defensive in nature.

A practical guide based on the skill and passive descriptions below.(Updated: 2026-10-18)

ANALYSISThreadspin

Ⅱ: Unlocks the passive Doctor.
Ⅲ: Increases power, healing, and Shield, and the Rupture damage bonus with Shield becomes ×1.5.
Ⅳ: Healing and Shield reach their maximum, the cap on the Rupture damage bonus rises, and it becomes ×2 with Shield.

SKILLSSkill

Awakening

Awakening skill

Pierce

Clash Power: 17~3014~27 → 17~30
Base Power: 1714 → 17
Coin Power: +13
No. of Coins: 1
Skill Level: Identity Lv+2
Attack Weight: 3

Final Power +1/2/3 if the main target has or

Before Attack Damage +1% per 1 total of the main target's Potency and Count (max 15/25%)

-With , this effect and its maximum become ×1.5/×2

After Attack Gain 4/7/10

After Attack Heal this unit and the 1 ally with the lowest current HP percentage by 15/20/30% of this unit's Max HP

-If this unit's HP is full, heal 2 allies instead

After Attack The 2 allies with the lowest current SP, including this unit, recover 10/15 SP

ⅠOn Hit Inflict 1/2/3

On Hit Inflict 1/2/3

Corrosion

Corrosion skill

Slash

Clash Power: 3~192~14 → 3~19
Base Power: 32 → 3
Coin Power: +4+3 → +4
No. of Coins: 4
Skill Level: Identity Lv+4
Attack Weight: 3

Indiscriminate

Attacks random targets

Base Power +1 if/for every 6 of the main target's Potency plus Count (max 2)

Before Attack Attack Weight +1 if/for every 4/3 highest Resonance (max 2)

After Attack Gain 4/7/10

After Attack If no target was staggered or killed by this skill's damage, take damage equal to 20% of Max HP and gain Shield of (that value×2)

-This effect cannot kill this unit. becomes maximum at Turn End, and gain 2 next turn (1 time per 1 turn)

ⅠOn Hit Inflict 1

ⅡOn Hit Inflict 1

Ⅲ

On Hit Increase Count by 1/2

Ⅳ

[At Coin Toss Start] Damage +30% if no target was staggered or killed by this skill's damage

On Hit Inflict 1/2/3

Normal Coin Unbreakable CoinThreadspin Ⅲ Threadspin Ⅳ mark additions or changes at those Threadspin tiers. Multiple values represent different tiers; the larger value is for the highest tier.

PASSIVEE.G.O Passives

E.G.O Passives

Doctor

At Turn Start, heal this unit and the 1 ally with the lowest current HP percentage by ( value)% of this unit's Max HP

-If this unit's HP is full, heal the 2 other allies with the lowest current HP percentage instead

-If the target is at 25% HP or less or staggered, the healing from this effect becomes ×1.5

At Turn End, if the last E.G.O skill Faust used in this battle is Command : Meltdown, 's Turn End decrease becomes 1

-This effect applies immediately from the turn the E.G.O skill is used

※Unlocked at Threadspin Ⅱ; active from the turn after E.G.O use until the end of battle

SYNERGYTeams and Synergies

Heishou Pack - Mao Branch Adept: Sloth S1, Gluttony S3, and Pride S2 supply all three required affinities, and she also inflicts Rupture.
Seven Assoc. South Section 4: Has a Gluttony S3, and S1–S3 inflict Rupture, which fits its Rupture-scaling attack.

Team Builds That Suit This E.G.ORupture Team

KEYWORDSEffect Glossary

Burn: At Turn End, take fixed damage equal to the Potency. After Turn End, reduce Count by 1.
Rupture: When hit by an attack skill, take fixed damage equal to the Potency. After taking damage, reduce Count by 1.
Hardened Shell-Barrier: -At Turn Start, gain Defense Level Up equal to (value÷3) (max 3, rounded down) -Right before taking damage from an enemy, consume half of Hardened Shell-Barrier and gain Protection equal to the amount consumed (1 time per 1 turn, rounded up) -Decreases by 3 at Turn End -Max 10
Damage Up: For 1 turn, increase damage dealt with skills proportional to the value (max 10).
Unbreakable Coin: This Coin is not destroyed on Clash Lose. If an attack skill contains this Coin, attack with it after taking damage. On Clash Lose, the Power of the remaining unbroken Coin becomes 1.