OUTERPLANE World Boss Harshuna Strategy and Team Setup

To clear high score thresholds against World Boss Harshuna in OUTERPLANE, field a balanced four-unit squad that combines a primary single-target carry, an armor debuffer, a defensive support, and a Chain Point generator. Harshuna has high natural damage mitigation and scaling area-of-effect attacks that punish pure damage-focused lineups. Your primary objective is depleting Harshuna's Weakness Gauge to trigger the Grogginess stagger state, then unleashing your highest Burst skills and 4-man Chain Skills during this damage multiplier window.

Required Team Roles and Skill Priorities

Harshuna's high baseline defenses blunt unbuffed damage, making role synergy far more important than individual combat power. Rather than running multiple glass-cannon attackers, allocate your team into four distinct functions.

Combat Role	Priority Buffs and Debuffs	Primary Function
Primary Striker	Attack Up, Critical Hit Damage Up	Stores Burst resources to execute single-target damage during Grogginess.
Utility Debuffer	Defense Down, Speed Down, Action Delay	Strips boss armor mitigation and slows Harshuna's skill cycling.
Defensive Sustainer	Barrier, Continuous Recovery, Cleanse	Mitigates scaling team-wide damage and prevents early party attrition.
Chain Enabler	Dual Attack, Chain Point Accrual	Accelerates Weakness Gauge depletion and charges 4-man Chain Skills.

Defense Down is mandatory throughout the encounter. Applying this debuff establishes the baseline damage required for both regular attacks and burst skills to register significant score totals. Pairing Defense Down with Speed Down or Action Priority delay further reduces incoming damage by pushing back Harshuna's offensive turns, granting your sustain hero more time to cycle shields and heals.

Encounter Flow and Grogginess Execution

Maximize your score by managing skill cooldowns in accordance with the state of Harshuna's Weakness Gauge. Firing high-tier Burst skills while the boss is active wastes resources against full damage mitigation. Execute the encounter in four structured phases:

Deplete the Weakness Gauge: Use basic attacks, multi-hit skills, and dual attacks to steadily reduce the boss's gauge. Conserve high-multiplier Burst skills and avoid burning primary offensive cooldowns.
Prepare Resources for Break: As the Weakness Gauge nears zero, confirm that your debuffer has Defense Down ready and that your team has accumulated sufficient Chain Points (CP) for a 4-man Chain Skill.
Execute the Grogginess Burst: Once the gauge empties and Harshuna enters Grogginess, apply Defense Down, fire the 4-man Chain Skill, and immediately follow up with your primary carry's highest-tier Burst abilities to maximize the stagger multiplier.
Re-stabilize and Reset: When Harshuna recovers from Grogginess, refresh defensive shields, heal accumulated chip damage, reapply Speed Down, and resume building Chain Points for the next break cycle.

Strategic Adjustments for Scoring Consistency

If your team struggles to hit target score benchmarks or wipes prematurely, adjust your composition and turn economy:

Stop firing ultimate skills off cooldown: Casting your carry's top abilities against an active Weakness Gauge severely caps your score. Always reserve your heavy burst damage for the Grogginess state.
Replace an extra DPS unit with sustain utility: If your squad wipes to Harshuna's escalating area-of-effect damage in later phases, swap out a secondary damage dealer for a dedicated barrier provider or continuous healer. Staying alive across multiple break phases yields substantially more points than brief, uncoordinated burst damage.
Tune speed and debuff accuracy: Ensure your utility debuffer acts ahead of your primary striker so that Defense Down is active before any Grogginess burst sequence begins.