Raid Info
Raid Info

Raid: Shadow Legends Dungeons

Every dungeon of the game: the Keeps, Dragon's Lair, Ice Golem's Peak, Fire Knight's Castle, Spider's Den, Minotaur's Labyrinth, Iron Twins Fortress, Sand Devil's Necropolis and Phantom Shogun's Grove. Pick a dungeon on the map or in the list below, then a mode and a stage: you will see the boss with its stats on that stage and its skills, and what a battle gives — potions, artifacts and their sets, accessories, and the chance of each drop.

Dungeons Void Keep Spirit Keep Magic Keep Force Keep Arcane Keep Dragon's Lair Ice Golem's Peak Fire Knight's Castle Spider's Den Minotaur's Labyrinth Iron Twins Fortress Sand Devil's Necropolis Phantom Shogun's Grove
Void Keep 20 stages Open Sunday
Spirit Keep 20 stages Open Monday, Thursday
Magic Keep 20 stages Open Wednesday, Saturday
Force Keep 20 stages Open Tuesday, Friday
Arcane Keep 20 stages Open every day
Dragon's Lair 25 stages · Hard mode Open every day
Ice Golem's Peak 25 stages · Hard mode Open every day
Fire Knight's Castle 25 stages · Hard mode Open every day
Spider's Den 25 stages · Hard mode Open every day
Minotaur's Labyrinth 15 stages Open every day
Iron Twins Fortress 15 stages Each affinity opens on its own days
Sand Devil's Necropolis 25 stages Open every day
Phantom Shogun's Grove 25 stages Open every day

Each affinity opens on its own days

Iron Twins Fortress

VoidOpen Sunday SpiritOpen Monday, Thursday MagicOpen Wednesday, Saturday ForceOpen Tuesday, Friday

Stage 15

Iron Twins

Iron Twins

Void Void · Lvl. 350

HP
3,503,306
ATK
26,905
DEF
3,737
SPD
250
C.RATE
15%
C.DMG
50%
RES
350
ACC
400

Rewards

Energy
20
Fortress Keys
1

What one battle costs.

Silver
9,520

For one won battle.

May drop in a battle

  • Mortal Soul Coin × 310–350 88%
  • Immortal Soul Essence × 9–11 8%
  • Eternal Soul Essence × 7–9 4%

First clear

  • Immortal Soulstone

Iron Twins

Boss skills

  • Voltaic Pendulums

    Attacks 1 enemy. Places a 30% Decrease C. RATE debuff for 4 turns. Also places a 25% Weaken debuff for 4 turns if the target is already under a Decrease C. RATE debuff. Will ignore Unkillable buffs whenever the Iron Twins’ HP is equal to or less than 40%.

    After attacking the initial target, attacks all other enemies. Places a 50% Decrease ATK debuff for 4 turns. Also places a 60%Decrease DEF debuff for 4 turns on enemies under Decrease ATK debuffs.

  • Fires of Insanity Cooldown: 3 turns

    Attacks all enemies. Places or extends Ironbrand debuffs on all enemies. The duration of each Ironbrand debuff given depends on each enemy’s DEF. The enemy with the highest DEF will receive 7 turns of Ironbrand. The enemy with the next highest DEF will receive 6 turns of Ironbrand, while the enemy with the next highest DEF will receive 5 turns of Ironbrand, and so on. If an enemy already has an Ironbrand debuff, the duration of their current Ironbrand debuff will be extended by this number of turns.

    Ironbrand debuffs cannot be blocked or removed.

    Growth Effect

    Every time this skill is used, the Iron Twins’ DEF will be increased by 2.5%, plus an additional 1% for every enemy whose Affinity does not match the Iron Twins’.

    The Iron Twins will not use this skill when their HP is below 40%.

  • Ruinous Swath Cooldown: 3 turns

    Attacks all enemies. Places or extends Ironbrand debuffs on all enemies. The duration of each Ironbrand debuff given depends on each enemy’s ATK. The enemy with the highest ATK will receive 7 turns of Ironbrand. The enemy with the next highest ATK will receive 6 turns of Ironbrand, while the enemy with the next highest ATK will receive 5 turns of Ironbrand, and so on. If an enemy already has an Ironbrand debuff, the duration of their current Ironbrand debuff will be extended by this number of turns.

    Ironbrand debuffs cannot be blocked or removed.

    Growth Effect

    Every time this skill is used, the Iron Twins’ ATK will be increased by 2.5%, plus an additional 1% for every enemy whose Affinity does not match the Iron Twins’.

    The Iron Twins will not use this skill when their HP is below 40%.

  • Doomsday Machine Cooldown: 2 turns

    Attacks all enemies 2 times. Each hit places or extends an Ironbrand debuff.

    The first hit places an Ironbrand debuff whose duration depends on each enemy’s DEF. The enemy with the highest DEF will receive 5 turns of Ironbrand. The enemy with the next highest DEF will receive 4 turns of Ironbrand, while the enemy with the next highest DEF will receive 3 turns of Ironbrand, and so on. If an enemy already has an Ironbrand debuff, the duration of their current Ironbrand debuff will be extended by this number of turns.

    The second hit does the same, but the duration of the Ironbrand debuffs placed depends on each enemy’s ATK instead.

    After the first two hits, attacks all enemies again. The damage inflicted to each enemy increases according to the number of turns remaining on each enemy’s Ironbrand debuffs. This hit will ignore 30% of each target's DEF.

    Growth Effect

    Every time this skill is used, the Iron Twins’ ATK and DEF will be increased by 4%, plus an additional 1% for every enemy whose Affinity does not match the Iron Twins’.

    The Iron Twins will only use this skill when their HP is below 40%.

  • Retaliatory Launch [P]

    Whenever the Iron Twins’ HP drops below 80%, 60%, and 40%, removes all debuffs from the Iron Twins, then instantly attacks all enemies.

    Fills the Iron Twins’ Turn Meter by 10% whenever an enemy receives a buff. Will not fill their Turn Meter if the Iron Twins are under Decrease SPD debuffs.

    The Iron Twins receive 50% less damage from each subsequent hit from multi-hit skills. The damage reduction increases with every additional hit.

    The Iron Twins are immune to Turn Meter reduction effects.

  • Almighty Immunity [P]

    Immune to Stun, Freeze, Sleep, Provoke, Block Active Skills, Block Passive Skills, Fear, True Fear, Petrification, Berserk, Enfeeble, Nullify, Ensnare, Fatigue, and Hunter's Gaze debuffs. Also immune to HP exchange effects, HP balancing effects, and cooldown increasing effects.

  • Almighty Strength [P]

    Damage from skills that scale based on enemy MAX HP cannot exceed 10% of the Boss' MAX HP when attacking the Boss.

Strategy

How It Works

  1. The Iron Twins are a powerful threat that requires management of both debuffs and your Champions’ Affinities if you want to come out on top.

    The key to success in this fight is dealing with the Iron Twins’ unique debuff, Ironbrand, and adjusting your team to account for the current Affinity of the Iron Twins, as it changes each day.

  2. Ironbrand does nothing on its own, but one of the Iron Twins’ skills, Doomsday Machine, deals damage to all Champions based on the duration of any Ironbrand debuffs currently on them. The longer you have left on an Ironbrand debuff, the more damage Doomsday Machine will do - so you need to manage Ironbrand carefully if you wish to survive.

    Ironbrand cannot be blocked or removed, but it can be resisted, so building your Champions to have high Resistance can make the difference between success and failure.

  3. Two of the Iron Twins’ skills, Ruinous Swath and Fires of Insanity, apply or extend Ironbrand debuffs on your Champions, based on their ATK or DEF respectively. The higher a Champion’s ATK or DEF is, the more turns of Ironbrand they’ll receive from these skills.

    Not only that, but the Iron Twins will increase their own ATK or DEF each time they use these skills. If that’s not enough, the Iron Twins gain additional boosts to their ATK or DEF whenever they use these skills based on how many Champions have an Affinity different to theirs - so your Champions’ Affinities are incredibly important. You might think building a team with an Affinity that counters the Iron Twins will make the battle easier but it actually means they get even stronger, even faster.

  4. With time being against you in this fight, you want to bring Champions who can deal heavy damage quickly. The longer you leave the Iron Twins alive, the longer your Ironbrand debuffs will last and the higher their ATK and DEF will get. You’ll want to stick to dealing damage with single-hit skills too, as the Iron Twins take 50% less damage from each subsequent hit of multi-hit skills.

    The Iron Twins also take reduced damage from HP Burn debuffs, but while these debuffs are less effective than usual, they are still a good tool to help you take the Twins down.

  5. When the Iron Twins’ HP drops below certain numbers, they’ll remove all debuffs placed on them and launch a devastating missile barrage at all Champions, so be prepared to deal with this retaliatory strike. You’ll also want to be careful when applying buffs to your team, as the Iron Twins will fill their Turn Meter by 10% each time you receive a buff. You can counter this Turn Meter fill by placing a Decrease SPD debuff on them, but they are immune to having their Turn Meter depleted or stolen.

Poison Debuff

Damages the target Champion by 2,5% or 5% of their MAX HP at the beginning of their Turn. This damage is not affected by any other effects except Poison Sensitivity debuff, and only scales per Target’s MAX HP. Block Damage blocks it. If the Target Champion has a Shield, Poison damage will be applied to the Shield first.

Weaken Debuff

Increases damage received by the Target Champion by 15% or 25%.

Block Buffs Debuff

All buffs that are applied to the Champion with this debuff are automatically blocked and have no effect.

Block Damage Buff

Makes the Champion immune to all forms of damage. Its duration cannot be increased.

Unkillable Buff

The Champion cannot fall below 1 HP when the Unkillable buff is active. Its duration cannot be increased.

Block Debuffs Buff

While this buff is active, the Champion is immune to all debuffs. Instant negative effects such as Decrease Turn Meter are not affected and work as normal.

Stun Debuff

The Champion with Stun debuff is unable to act X Turns. Cooldowns are not refreshed while Stun is active.

Heal Reduction Debuff

Any healing received by the Champion with Heal Reduction debuff is reduced by 50% or 100%.

Shield Buff

The Champion's HP bar is reinforced with a Shield for the indicated number of turns. Damage is calculated as normal but is first applied to the Shield (unless the attack is stated to ignore Shields). When the Shield buff expires, or the value of the Shield reaches 0, the buff is removed and any further damage is applied as normal.

Decrease DEF Debuff

Decreases the Champion’s Battle DEF by 30% or 60%.

Increase DEF Buff

Increases the Champion’s Battle DEF by 30% or 60%.

Increase SPD Buff

Increases the Champion’s Battle SPD by 15% or 30%.

Decrease ATK Debuff

Decreases the Champion’s Battle ATK by 25% or 50%.

Decrease SPD Debuff

Decreases the Champion’s Battle SPD by 15% or 30%.

HP Burn Debuff

When a Champion under a HP Burn debuff starts their turn, they and all their allies take damage equal to 3% of their individual MAX HP. There can only be one HP Burn debuff active on a Champion at a time.

Block Revive Debuff

This debuff blocks Revive effects. The Block Revive debuff cannot be blocked. Valid throughout the battle.

Counterattack Buff

When attacked, the Champion with Counterattack buff strikes back at their attacker using their Default Skill. This attack deals 75% of the normal Default Skill damage. Can only counterattack once when attacked with a Multi-hit skill. Does not counterattack in response to the enemy’s own counterattack. Does not count as a Turn.

Reflect Damage Buff

The attacker will take back 15% or 30% of the damage dealt.

Freeze Debuff

The Champion with Freeze debuff is unable to act X Turns. Cooldowns are not refreshed while this debuff is active. The Champion only receives 75% of incoming damage.

Increase ATK Buff

Increases the Champion’s Battle ATK (current ATK value) by 25% or 50%.

Increase C. DMG Buff

Increases the Champion’s C.DMG by 15% or 30%.

Hex Debuff

Champions under Hex debuffs take damage whenever their allies do. The damage from Hex debuffs ignores Champions' DEF. The original targets all take full damage.

Champions under Hex debuffs take 2% of AoE damage inflicted on their allies, and 10% of single-target damage inflicted on their allies.

Champions under Hex debuffs only take extra damage from direct attacks on their allies, not lasting effects (like buffs or debuffs) - for example, damage from Poison, HP Burn, Bomb debuffs, Reflect Damage buffs, etc.

Ironbrand Debuff

The Ironbrand debuff does nothing on its own, but it will increase the damage dealt by the Iron Twins' Doomsday Machine skill. Damage from this skill is increased according to the duration of any Ironbrand debuffs currently active on each Champion. The higher the duration of an Ironbrand debuff, the greater the damage that Doomsday Machine will do. Ironbrand cannot be blocked or removed, but it can be resisted.

Sleep Debuff

The Champion with this debuff is unable to act X Turns. Cooldowns are not refreshed while Sleep is active. Continuous Heal, Poisons, and HP Burn work as normal while the Champion is asleep, so do any Passive Skills that heal the Champion.

This debuff can be removed from the target by inflicting any kind of active damage (except the turn when the Sleep debuff was placed).

Fear Debuff

There are two versions of this debuff: Fear and True Fear.

When a Champion with Fear Debuff attempts to use a skill, there is a 50% chance that the skill will not activate, and the Champion will lose their turn.

When a Champion with True Fear debuff attempts to use a skill, there is a 50% chance that the skill will not activate, and the Champion will lose their turn. The skill they attempted to use will go on cooldown.

Decrease ACC Debuff

Reduces the Champion’s Battle ACC by 25% or 50%.

Revive On Death Buff

If a Champion with this buff dies, they will immediately revive with 30% HP and 0% Turn Meter. This buff's duration cannot be increased.

Enfeeble Debuff

Champions under an Enfeeble debuff can only land weak hits, unless stated otherwise in a skill description.

Stone Skin Buff

The Stone Skin buff decreases the damage (except the damage received from Bombs and HP Burn), removes all debuffs except Bombs and HP Burn, gives immunity to all debuffs, even those that cannot usually be blocked, except Bombs and HP Burn. Also, grants an additional Stone Skin shield.

A Champion with the Stone Skin is immune to the Decrease MAX HP and Decrease Turn Meter Effects.

Taunt Buff

If a Champion is under a Taunt buff, enemies can only target that Champion. If there are several Champions under a Taunt buff on the same team, enemies can target any of the Taunting Champions.

When using an AoE attack, only the Champion under the Taunt buff can be targeted, but their allies will still take damage from the AoE attack as normal.

The Provoke debuff has priority over the Taunt buff, meaning a Provoked Champion will still only target the Champion who placed the Provoke debuff on them, rather anyone under a Taunt buff.

In addition, if there is only one Champion under a Taunt buff on a team, it will supersede any other buffs that affect targeting (like Veil and Perfect Veil), meaning a Champion under both Taunt and Veil buffs will be targeted.

However, if there are multiple Champions under Taunt buffs on a team, buffs that affect targeting (like Veil and Perfect Veil) will then take effect to decide who will be targeted. For example, in a situation where two Champions are under Taunt buffs, but one of them is also under a Veil buff, the Champion under only Taunt will be targeted, whereas the Champion under Taunt and Veil will not.

The Taunt buff cannot be spread, and its duration cannot be increased. It can be stolen, removed, and its duration can be decreased.

Decrease C. RATE Debuff

Decreases the current value of the Champion's Critical Rate by 15% or 30%.

Decrease C. DMG Debuff

Decreases the current value of the Champion's Critical Damage by 15% or 25%.

Block Passive Skills Debuff

Block Passive Skills debuff blocks activation of Champion's passive skills. This debuff cannot block passive skills which are marked as unblockable.