From solo-able pushovers to multi-team challenges, *Arcane Lineage*'s bosses offer diverse and engaging encounters. Each boss boasts unique mechanics demanding strategic thinking and patience for a successful takedown. The rewards? Some of the game's most coveted loot and items. This guide equips you to conquer these formidable foes.

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Table of Contents

Arcane Lineage Boss List

King Slime

While technically a boss, King Slime is more of a mini-boss, easily defeated even by newer players. However, low-level players should still approach with caution. Note that soul points are not awarded for this encounter.

King Slime Location

King Slime spawns after 100 Slimes are killed on the server. It appears near the city closest to the last slain slime's location. A notice on the Quest Board announces the King Slime quest, which involves locating and defeating the boss. This quest has a 30-minute global server cooldown.

King Slime Fighting Strategy

King Slime starts with 400 HP (600 HP if Corrupted), the lowest of any boss. Its main attack involves summoning additional Slimes, which can overwhelm players if not dealt with promptly. AOE poison attacks are also common, so potions and cleansing abilities are recommended. Its low health pool makes the battle relatively straightforward; focus on eliminating the summoned Slimes before attacking the boss directly.

King Slime Drops and Rewards

Possible drops from King Slime include: Random Tier 1 Equipment, Slime Buckler, Gelat Ring. Quest board rewards for completing the King Slime event include: Ferrus Skin, Potion, Small Health Potion, Essence, Gold.

Yar’thul, the Blazing Dragon

A fire-type boss utilizing fire and inferno-based attacks. Most attacks inflict Inferno and Burning stacks, making preparation crucial. Resistant to fire and physical damage, Yar’thul is weak to Hex damage.

Yar’thul Location

Yar’thul resides deep within Mount Thul, an active volcano in the desert. Navigate the volcano's interior to reach the Blazing Dragon.

Yar’thul Fighting Strategy

Yar’thul boasts 1200 HP (1800 HP if Corrupted). Its high damage output makes this a race against time. Below 50% health, it enters a second phase, summoning meteors that inflict stunning and healing reduction. The Dragon Ring and Pristine-level accessories are highly beneficial. The Corrupted version gains lifesteal.

Yar’thul Drops and Rewards

Guaranteed rewards: Absolute Radiance, Permafrost Curse, Wild Impulse, Heavenly Prayer, Breath of Fungyir, Narhana’s Sigil, Reality Watch, Shifting Hourglass, Ring of the Dragon, The Void Key (Corrupted Yar’thul). Possible drops: Dragontooth Blade, Dragonbone Gauntlets, Dragonbone Spear, Dragonflame Shield, Memory Fragment, Soul Dust, Phoenix Tear, Resplendant Essence, Lineage Shard, Skyward Totem.

Thorian, the Rotten

Once an animal, Thorian is now a corrupted monstrosity inflicting curses. Resistant to most elements, it's heavily weak to Holy damage.

Thorian Location

Found deep within the Cess Grounds in the Deeproot Canopy. Head right upon entering the Cess Grounds.

Thorian Fighting Strategy

Thorian has 2600 HP (3900 HP if Corrupted). Attacking twice with the same attack type triggers a 150% damage heal. Use varied attack types. It's highly vulnerable to Holy damage (135% damage increase) and slightly weak to fire (10% damage increase). Below 50% health, it unleashes a devastating attack inflicting Plague, Curse, and Hexed (15-turn cooldown).

Thorian Drops and Rewards

Guaranteed rewards: Absolute Radiance, Permafrost Curse, Wild Impulse, Heavenly Prayer, Breath of Fungyir, Stellian Core, Metrom’s Amulet, Darksigil Ring of Blight, The Void Key (Corrupted Thorian). Possible drops: Blightrock Dagger, Blightwood Staff, Memory Fragment, Soul Dust, Phoenix Tear, Resplendant Essence, Lineage Shard, Skyward totem.

Metrom’s Vessel

A raid boss spawning on a global timer, requiring a Void Key (obtained from corrupted bosses) for entry. A massive health pool and complex mechanics make this an extended, challenging encounter.

Metrom’s Vessel Location

Spawns on a server-wide timer; location is announced upon spawning.

Metrom’s Vessel Fighting Strategy

Metrom’s Vessel has 10,000 HP (15,000 HP if Corrupted). Two phases with varying wing mechanics (damage negation and offense/defense modes). Summons Shadeblades (200 HP each). In phase one, destroying wings increases damage output. In phase two, wings shift between offense (damage increase) and defense (damage resistance and Thorns Aura). A Mini Shadebringer is summoned for each failed dodge. Requires coordinated team effort and strategic debuff application.

Phase 1 Attacks

Phase 2 Attacks

Metrom’s Vessel Drops and Rewards

Guaranteed rewards: Metrom’s Grasp, Chaos Orb, Expedite Anklet, Echo Shard, Tempurus Gem, Arcanium Crystal. Possible drops: Darkblood Staff, Darkblood Dagger, Darkblood Spear, Darkblood Hexer, Darkblood Sword, Darkblood Cestus.

Arkhaia and Seraphon

Arkhaia (7000 HP, unlocked at rank 20 in the Cult of Thanasius) and Seraphon (4500 HP, unlocked at rank 20 in the Church of Raphion) are challenging late-game bosses with complex mechanics. Defeating them unlocks the Inferion and Sheea races, respectively.

This concludes our *Arcane Lineage* boss guide. Looking to boost your power? Check out our complete *Arcane Lineage* class tier list and guide.