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Annihilator Joint Challenge Guide

By Sevih · Updated May 19, 2026

Joint Challenge boss. The boss gains on S1 and requires DarkDark units for optimal action point efficiency. Single target attacks are heavily penalized with 70% damage reduction and WG recovery. Non-attack skills deal 20,000 fixed damage to the boss.

Difficulty

Annihilator

Annihilator

lightstrikerLv. 120

Immunities

5,000Attack
0Defense
2,000,000Health
250Speed
10%Crit Chance
150%Crit DMG
0%Crit DMG Reduc
0%Penetration
0%DMG Increase
12%DMG Reduction
416Effectiveness
54Resilience
WG60WG

Lv. 120 — Joint Challenge · Defeat the Annihilator Very Hard

Skills

Target Acquired

Single Target

Attacks an enemy. Upon attack, gains a Barrier for 1 turns.

Neutralize All Fronts

CD 6All Enemies

Attacks all enemies. After attacking, decreases all enemies' Critical Hit Chance/Critical Damage for 9 turns, and fully reduces the Priority of all non-HealerHealer enemies.

Program Annihilation

CD 7All Enemies

Attacks all enemies. Upon attack, removes all Enhancement Effects from all enemies and inflicts Unbuffable for 9 turns. Grants an extra turn after attack.

Plasma Oscillations

(Passive Effect) After any attack, an enemy's Counterattack, Revenge, or Agile Response will not trigger. When hit by a single-target attack, final damage is reduced by 70%, and Weakness Gauge damage is not taken. Additionally, recovers Weakness Gauge by 3. (Only the highest final damage reduction value applies.) When an enemy uses a skill that is not an attack, they take 10000 Fixed Damage twice. Each time an enemy takes an action other than Burst Skill/Dual Attack/Skill Chain, DMG dealt by all DarkDark enemies increases by 30%. Prevents other AP reduction skills, and AP cost for non-DarkDark enemies increases by 50%. Damage from Curse/Fixed Damage dealt to the Boss cannot exceed 10000. All attacks deal more damage the fewer targets there are.

Enraged

Single Ally

Becomes Enraged every 4 turns. Enraged: Grants an irremovable effect to the caster that increases attack and reduces damage taken for 3 turns, and recovers Weakness Gauge by 10%. Enraged lasts for 3 turns. Enraged Ultimate Skill: Used when Enraged ends. Attacks all enemies, and resets skill cooldowns of all skills of the caster.

Tips and teams below are written for Very Hard.

Tactical Tips

  • Boss gains on S1 - use to remove it.
  • DarkDark units have 50% reduced action point cost.
  • Single target attacks deal 70% reduced damage and restore 3 WG to the boss.
  • Non-attack skills deal 10,000 fixed damage to the boss twice.

Recommended Characters

LiselottefirehealerMaxwelldarkmage

Liselotte, Maxwell

Essential pick for score bonus.

Demiurge VladadarkrangerElizadarkrangerEpsilondarkstrikerGnosis DominedarkmageGnosis Vielladarkstriker

Demiurge Vlada, Eliza, Epsilon, Gnosis Domine, Gnosis Viella

or to remove the boss's .

Suggested Teams

Your unit should have 240 speed (not over) to play before your DPS and remove the . Remember to count Liselotte's transcend speed bonus (+5 at 4★, +10 at 6★).

Combat Footage

Annihilator — Very Hard — 1 run clearby Sevih