The Iron Twins is a Raid Shadow Legends boss that can be found in the Iron Twins Fortress, a dungeon that resets every day and changes its affinity daily. This challenging encounter requires players to be swift in defeating the metal monstrosity, as the difficulty increases over time. To achieve success, players must have a well-planned strategy that accounts for the boss’s mechanics, which we will now explore in detail.

Iron Twins Fortress 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 DEE] 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 10 turns of [Ironbrand]. The enemy with the next highest DEF will receive 9 turns of [Ironbrand], while the enemy with the next highest DEF will receive 8 turns of [Ironbrand], and so on. If an enemy already has a [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 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 10 turns of [Ironbrand]. The enemy with the next highest ATK will receive 9 turns of [Ironbrand], while the enemy with the next highest ATK will receive 8 turns of [Ironbrand], and so on. If an enemy already has a [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 [Passive] Attacks all enemies 2 times. Each hit places or extends a [Ironbrand] debuff. The first hit places a [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 a [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 [Passive]: Whenever the Iron Twins’ HP drops below 85%, 70%, 55%, and 40%, instantly attacks all enemies, then removes all debuffs from the Iron Twins. 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 [Passive]: Immune to [Stun], [Freeze], [Sleep], [Provoke], [Block Cooldown Skills], [Fear], and [True Fear] debuffs. Also immune to HP exchange effects, HP balancing effects, and cooldown-increasing effects.
• Almighty Strength [Passive] Damage from skills that scale based on enemy MAX HP cannot exceed 10% of the boss’ MAX HP when attacking the boss. Poison Effects are 90% less effective.

Iron Twins Stages

There are 15 stages to complete and you ideally want to be farming the highest stage you can farm. To be successful, aim for:

Speed

• Stages 1-6: 150+ Speed to go before the Iron Twins
• Stages 7-12: 220+ Speed to go before the Iron Twins
• Stages 13-15: 250+ Speed to go before the Iron Twins

Accuracy

• Stages 1-6: 155+ (104 if you bring Increase Accuracy)
• Stages 7-12: 280+ (187 if you bring Increase Accuracy)
• Stages 13-15: 555+ (370 if you bring Increase Accuracy)

Resistance

• Stages 1-6: 230+ (115 if you bring Decrease Accuracy)
• Stages 7-12: 355+ (180 if you bring Decrease Accuracy)
• Stages 13-15: 705+ (350 if you bring Decrease Accuracy)

Health and Defense

• Below is the recommended minimum HP and Defence to survive the Iron Twin Fortres Boss:
• Stages 1-6: 25K HP and 2400 Defence
• Stages 7-12: 40K HP and 2800 Defence
• Stages 13-15: 50K HP and 3500 Defence

Iron Twins Fortress Champion Tier List

Champion by Rarity: Legendary | Epic | Rare | Uncommon | Common