Outerpedia

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

Liselotte
fire
healer
Liselotte
Gnosis Domine
dark
mage
Gnosis
Domine
Maxwell
dark
mage
Maxwell
Demiurge Astei
dark
mage
Demiurge
Astei
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