Since ARCDIM X Zeta deals massive M.DMG that permanently reduces Heroes' Heal Rate until it takes a certain number of hits in a specific pattern, you need to use Heroes that can deliver multiple hits and increases Heal Rate. Also be aware that ARCDIM X Zeta has high Crit Resistance.

Since ARCDIM X Delta continously stacks Bleed, you need to use Skills that dispel negative effects. Also, because it greatly increases P.Dodge until it takes a certain number of hits in a specific pattern, you need to use effects related to ACC. Also, be aware that ARCDIM X Delta has high Crit Resistance.

Siegfried can revive 2 times if he is near death. Each time he overcomes death, the power of his sword becomes stronger. In his final state, the aura of his sword will become increadibly big and start preying upon the Heroes in the backline. Make sure to protect your Heroes located in the back. Siegfried becomes incredibly powerful when his Mana is full, so prevent him from recovering Mana to the max.

Galgoria constantly recovers its HP. Reduces its Heal Rate or attack it with massive DMG to defeat it. If you deal DMG to Galgoria several times, the ally that dealt the highest DMG will be sealed for a certain period, so be careful!

Ascalon constantly reduces Heroes' Mana. So keep a close eye on your Mana when you're facing Ascalon. If you get hit by Ascalon, your Mana Recovery will be reduced. And if your Mana reaches 0, your Skills will be sealed, so watch out!

As [Deathly Dragon] state increases Tersio's DMG dealt to enemies and his Crit Chance, you must dispel it. [Death's Door] constantly deals massive M.DMG and increases M.DMG the target takes. Since it becomes irremovable upon reaching the max number of stacks, it must be dispeled regularly. Also, when Tersio takes a certain amount of DMG, [Power of Hatred] is activated and he soars to the sky after a while to annihilate all enemies. Use CC Skills to reduce [Power of Hatred] and stop Tersio from using the Skill.

Since Apocalypsion's [Invitation to the Abyss] deals massive DMG to targets inflicted with [Abyssal Curse], you need to dispel [Abyssal Curse]. Also, when Apocalypsion takes a fatal DMG, [Power of Hatred] is activated and she summons meteors to annihilate all her enemies. Use CC Skills to reduce [Power of Hatred] and stop Apocalypsion's Skill. All attacks from Apocalypsion have high Crit Chance, so watch out!

You will battle Otherworldly Darkness Shakmeh with 2 parties, and you must be careful since the two parties will not affect each other. Also, Shakmeh will be equipped with new Skills for battles above Stage 3 and Stage 5, so you need to be prepared. You can use [Protection of the Oasis] and [Wrath of the Desert] Skills when you are battling Otherworldly Darkness Shakmeh. Use them to defeat Shakmeh.

Devourer Shakmeh dungeon is consisted of 5 Waves. The Sekireinel Totem that appears in each Wave reduces the Heal Rate every set amount of time. From stage 5 battles or above, it dispels positive effects from the enemy with the highest ATK, so be careful. Shakmeh becomes stronger if he has more Mana, and all of his attacks ignore the enemy's DEF. Use Heroes that reduce the enemy's Mana and Heroes that reduce the enemy's ATK to defeat him.

If Sekmaha's Skill is used during an advantageous flow, it becomes stronger. If used during unfavorable flow, it becomes weaker. You should utilize the CC gauge to your advantage to control the flow. Also, since positive effects of [Waterfall] and [Sea] are enhanced depending on the current amount of Mana of your Heroes, you should try to keep Mana high.

Relic of the Sky creates a Healing Field which nulifies any DMG the Relic may take, constantly dispels negative effects, and disrupts ranged Heroes from healing their HP. All these effects become deactivated when Musama casts [Icon of the Sun]. Try to destroy the Relic of the Sky during that opening.

Imet will use [Swift Execution] after imprisoning all its enemies in Sand Prison. You must protect your Hero with the lowest P.DEF from dying. Be careful when Imet successfully blocks an attack while Desert Guardian's Bladecraft is active, as it will continuously increase its ATK.

Enemies hit by the [Scorching Heat] is knocked back into the [Zone of Inferno]. [Zone of Inferno] deals great DMG and weakens your DEF, so fast escape is crucial. When [Executioner's Casket] is summoned, focus fire to destroy the casket, which whill deal great DMG to Velkazar, and will cancel out [Hellfire].

[Deadly Boomerage] cast after [Body Crash] leaves permanent scars on enemies. As Lakreil will stop casting [Dealy Boomerang] once [Rage of Lakreil expires, you should dodge his attacks or deal massive P.DMG to him.

When Tyrfas use [Avalanche], quickly deal M.DMG to cancel its skill activation. Watch out for the Chill effect, it will prevent you from HP reovery.

[Manticore Venom] deals large DMG to frontal enemies and summons scorpions. If the frontal hero cannot keep up with the DMG, the formation will fall. [Rush of Death] deals massive P.DMG to all heroes and requires to be stopped.

Stacks [Orc Rage] each time the boss takes DMG. Stacks up to 100 times, which causes Enragement, greatly increasing stats. Heroes that can [Dispel] are advantageous in this stage.

[Shadow Stealth] is a special state that gives 100% dodge rate to all attacks up to 100 times, after which the skill is dispelled for a set amount of time. Heroes with high hit-rate and atk spd are advantageous in this stage.

[Children of the Queen] increases the ATK and DEF of the boss greatly per each minion summoned. Magic heroes with AOE spells are advantageous in this stage.

Upon taking M.DMG, reflects M.DMG and silences the aggressor. Physical heroes and CC Resistance stats are advantageous in this stage.

[Strike of the Gaint Beast] deals massive DMG to knocked over enemies. Clear the knocked over state of [Gaint Earthquake] or use heroes with [CC Resistance] skills are advantageous in this stage.

The Unstoppable Lonely King receives only 1 DMG from all attacks. His attacks deal DMG proportional to enemy Max HP.

She was once a goddess of the Underworld that was forgotten by history. Empowered with the Abyssal Darkness, the ancient being has become a World Boss.

You must rescue allies caught by Protianus's [Water Prison] effectively by dealing P.DMG to the boss. Without dispelling [Water Prison], the party will much of their damage dealing capacity.

The Mountain Fortress loses DEF and takes increased M.DMG while its Core is vulnerable. When it uses [Defense Mode] use M.DMG to strip out the Core, creating an opportunity to deal massive DMG.