Mermaid Isle Battle Tips: Combat Update Walkthrough - Combat

Mermaid Isle Battle Tips: Combat Update Walkthrough

Master the Disharmony Rising combat update with these Mermaid Isle battle tips, covering weapons, wave strategies, and boss fights.

2026-08-09
Mermaid Isle Wiki Team
Quick Guide
  • Mermaid Isle battle tips are essential for clearing the Disharmony Rising combat update
  • Healing Blossom is the top weapon choice for both solo and co-op play
  • Circle strategy helps you avoid damage while consistently attacking enemies
  • Card selection between rounds determines your late-game survivability
  • Co-op revives cost only 250 pearls, making group play highly effective

Getting Started with the Combat Update

The Disharmony Rising combat update introduces a wave-based survival mode where players face ten increasingly difficult waves of enemies and bosses. To begin, tap the pink combat icon and speak with Elegy, the seahorse spirit. You can choose to join a battle in your current server or search for one in another server.

Video Highlights:

  • Two active codes provide 1,212 pearls each for new players
  • Combat mode features ten waves with escalating difficulty
  • Rewards include tails, companions, clothing, and crafting materials
  • Weekly quests offer additional harmony points and disharmony shards

Before diving into battle, understanding the reward structure helps you decide whether to play solo or in a group. The reharmonize reward path requires multiple playthroughs to level up, but you do not need to win the entire pool. However, obtaining tails requires completing all ten waves, with a 25% drop rate per completion.

Code Rewards

New players can redeem two codes — Biscorya (capital B) and Elegy (capital E) — for 1,212 pearls each. These pearls are useful for reviving teammates during co-op battles and purchasing upgrades.

ModeDifficultyRevive CostBest For
SoloHigherN/AWeekly goals, leveling up
Co-opLower250 pearlsEarning tails, clearing all 10 waves

Weapon Selection and Loadout Strategy

Choosing the right weapon significantly impacts your performance in the combat update. Each weapon type offers unique effects and playstyles, but one option stands above the rest for most players.

Healing Blossom

  • Self-healing capability
  • Decent damage output
  • Can heal teammates in co-op
  • Best overall survivability

Standard Weapons

  • Various status effects
  • Higher raw damage potential
  • No self-sustain
  • Requires team support

Special Weapons

  • Unique weapon skills
  • Situational advantages
  • Crafting required
  • Advanced playstyles

The Healing Blossom is widely considered the strongest weapon because it allows you to step away from combat and heal yourself at any time. This is particularly valuable during solo runs where no teammates can revive you. The weapon skill doubles as both a dodge mechanism and a healing tool, making it incredibly versatile.

Weapon Weakness

The main drawback of the Healing Blossom is its reduced effectiveness when playing with inexperienced teammates. If party members are constantly taking damage, you may spend more time healing others than dealing damage yourself.

WeaponDamageSurvivabilityUtilitySolo Viability
Healing BlossomMediumExcellentHigh★★★★★
Standard DPSHighLowMedium★★★☆☆
Hybrid WeaponsMediumMediumMedium★★★★☆

Wave-by-Wave Battle Strategy

Understanding each wave's enemy types and mechanics is crucial for reaching the final boss. The ten waves follow a progressive difficulty curve with mini-bosses appearing at key intervals.

1

Waves 1-3: Lionfish Enemies

The first three waves feature basic lionfish enemies. Use your basic attack while circling around them. When you see purple orbs heading toward you, immediately press the block button to avoid poison damage. The lionfish telegraph their attacks with visible arrow indicators, giving you time to block.

2

Wave 4: Lesser Maw Mini-Boss

The Lesser Maw is a large fish that attempts to bite you. A jaw symbol appears above your head when it targets you. While the bite deals no direct damage, it inflicts a weakened state that lowers your attack speed temporarily. This debuff carries into the next boss fight, so manage it carefully.

3

Wave 5: Greater Maw Boss

The Greater Maw attacks from below, shown by cylindrical area markers. Use the dodge button to escape quickly. During the suction phase, hide behind pillars to avoid taking significant damage. Only attack the Greater Maw when it enters its resting state.

4

Wave 6-8: Lionfish Warriors and Mages

These waves introduce mages inside large bubbles and armored knights. Prioritize killing mages first, as they make knights immune. If frozen (disarmored), press dodge to break free. Circle around mages while attacking to avoid knight projectiles. Waves 7 and 8 add more enemies, requiring you to alternate between multiple mages.

5

Wave 10: Viscorya Final Boss

Viscorya is the ultimate challenge. She requires high health and decent damage output to defeat solo. After her first defeat, she immediately deals significant damage. In phase two, avoid red circles and prepare for aggressive push attacks that can knock you across the map.

Circle Strategy

The most effective tactic throughout all waves is the circle strategy. Move around enemies in continuous circles while attacking, similar to a shark's hunting pattern. This makes it harder for enemies to target you and allows you to heal during brief disengagement windows.

Card Selection Between Rounds

Between each round, you select cards that modify your stats and abilities. Making the right choices determines whether you survive the later waves. Card selection should adapt to your current build and the upcoming wave type.

Card TypeEffectPriorityBest Timing
Pro FishSlight increase to all statsMediumEarly waves (1-5)
Seafair's Blessing+100 HP, +7 healingVery HighAny wave (rare)
Attack Speed BoostIncreases attack speedHighWaves 5+
HP BoostIncreases max healthHighWaves 5+
Extra PollBonus pearls per roundLowAvoid entirely

During the first five waves, stat distribution matters less since enemies are manageable. Starting at wave six, prioritize high attack, fast attack speed, and decent HP. If using the Healing Blossom, attack speed becomes your most critical stat because low attack speed prevents you from healing effectively.

Avoid These Cards

Never select cards that reduce your health. Additionally, avoid the Extra Poll cards unless you are specifically farming pearls, as there are easier farming methods outside combat mode. Focus every card selection on increasing your combat stats.

The Seafair's Blessing card is exceptionally rare but game-changing. It permanently grants 100 additional HP and boosts healing abilities by 7, which dramatically increases your survivability in later waves. If you encounter this card, always select it.

Boss Fight Deep Dive

The combat update features three major boss encounters, each with distinct mechanics that require specific strategies.

Lesser Maw (Wave 4)

  • Jaw symbol indicates incoming bite
  • Bite causes weakened debuff
  • Lowered attack speed is temporary
  • Debilitates you for Wave 5
  • Try to be the targeted player in co-op

Greater Maw (Wave 5)

  • Cylindrical markers show attack zones
  • Dodge immediately when markers appear
  • Hide behind pillars during suction phase
  • Only attack during resting phase
  • Use dodge to reposition quickly

Viscoria (Wave 10)

  • Phase 1: Circle and dodge strategy
  • Instant damage after first defeat
  • Phase 2: Red circles and push attacks
  • Block and dodge spam required
  • Co-op strongly recommended

For the Greater Maw fight, timing your dodges is critical. The cylindrical attack zone appears briefly before the strike, giving you a narrow window to escape. If caught in the suction phase without a pillar nearby, use your dodge ability to resist the pull and reach cover. The Healing Blossom weapon skill is particularly useful here, as it combines healing with mobility.

Viscoria Phase Transition

After defeating Viscoria's first phase, she immediately deals significant damage. You may be able to dodge this attack if your timing is precise. Watch for the transition animation and be ready to press dodge the moment the cutscene ends.

BossKey MechanicCounter StrategyRisk Level
Lesser MawWeakened debuffAccept bite, manage timingLow
Greater MawSuction + underground attackPillar cover, dodge timingMedium
Viscoria P1Targeted projectilesCircle strategy, constant dodgeHigh
Viscoria P2Red circles + push attacksPositioning, block spamVery High

Rewards and Progression Checklist

The combat update offers extensive rewards across multiple progression tracks. Understanding what is available helps you prioritize your playtime and set realistic goals.

Combat Update Goals:

  • Redeem both codes (Biscorya and Elegy) for 2,424 pearls
  • Complete all 10 waves at least once for tail chance
  • Collect disharmony shards for weapon crafting
  • Unlock all three companions from reward track
  • Complete weekly quests for harmony points
  • Craft at least one combat weapon and clothing item

The reward system is divided into two main categories. The reharmonize reward path levels up through repeated play, requiring multiple combat sessions but not necessarily winning. The tail rewards require completing all ten waves, with a 25% chance per completion.

Reward Breakdown

Completing the combat mode yields: 3 companions, 9 tails, 5 free harmonized rewards, disharmony shards for crafting, 2 clothing items, 1 weapon, and the Dis-harmony title. Weekly quests provide additional harmony points and crafting shards.

Reward TypeRequirementDrop RateNotes
TailsComplete all 10 waves25% per runCo-op recommended
CompanionsReharmonize track levelsGuaranteedMultiple playthroughs needed
Disharmony ShardsWave completion + weekly questsGuaranteedUsed for crafting weapons and clothing
Harmony PointsWave completion + weekly questsGuaranteedUseful if Season of Myths incomplete
ClothingReharmonize track + craftingGuaranteed2 pieces available
WeaponCrafting with shardsGuaranteedRequires shard collection

Frequently Asked Questions

Q: What is the best weapon for Mermaid Isle battle tips and combat mode?

The Healing Blossom is widely considered the best weapon for the combat update. It allows self-healing, deals decent damage, and can heal teammates in co-op. Its weapon skill doubles as a dodge and heal, making it extremely versatile for both solo and group play.

Q: Can I earn rewards without winning all 10 waves?

Yes. The reharmonize reward path levels up through repeated play, and you do not need to win the entire pool to progress. However, earning tails requires completing all 10 waves. Weekly quests also do not require full completion, just participating in combat mode multiple times.

Q: Is it better to play combat mode solo or in a group?

It depends on your goals. For weekly goals and leveling up, solo play is recommended because you can concentrate your attacks without distractions. For earning tails and clearing all 10 waves, co-op is easier because revives cost only 250 pearls and you can divide the boss's attention.

Q: How do I deal with the weakened debuff from the Lesser Maw?

The Lesser Maw's bite inflicts a temporary weakened state that lowers your attack speed. This debuff carries into the Greater Maw fight. To minimize its impact, try to avoid being bitten when possible, and if you are weakened during the Greater Maw fight, focus on dodging and healing until the effect wears off.