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Iron Twins Fortress

Two bosses with rotating affinity. Bring debuffs that amplify, buffs that keep the team alive.

Medium confidence on the tactics. The skill text below is the game's own.

Reading your account…

Bring

Avoid

  • Champions of the affinity the twins counter that day.

Stats

  • Check the daily affinity before building the team

Notes

  • The affinity the Twins favour rotates daily; check it in game before you commit a team.
  • The Twins buff each other and hit as a pair, so buff removal and Decrease ATK matter more here than raw damage.

What Iron Twins Fortress does

Skill text straight from the game client. Numbers are the base difficulty; higher stages scale them up.

  • Voltaic PendulumsBasic

    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 InsanityCooldown 3

    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 SwathCooldown 3

    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 MachineCooldown 2

    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]Passive

    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]Passive

    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 Tolerance [P]Passive

    Decreases the damage taken from Poison debuffs by 90%.

  • Almighty Strength [P]Passive

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

  • Grim Fortitude [P]Passive

    Decreases the damage taken from [Smite] debuffs by 70%.