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"Arcane Lineage Bosses: Full Guide to Victory"

by Isabella May 29,2025

If you're diving into the world of *Arcane Lineage*, you'll encounter a variety of bosses that range from deceptively simple to downright legendary. Each boss presents a unique set of challenges, requiring strategic thinking and tactical execution to overcome. While some are straightforward enough for newer players to tackle solo, others demand the coordination of multiple teams to emerge victorious. Defeating these formidable foes often yields some of the most sought-after loot and items in the game, so it pays to be well-prepared. Follow along with our comprehensive *Arcane Lineage* Boss guide to conquer these epic battles.

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Arcane Lineage Boss Guide

BossLocationDifficulty
**King Slime**Around the CityEasy
**Yar’thul, the Blazing Dragon**Inside Mount ThulNormal
**Thorian, the Rotten**Deep in the Cess GroundsHard
**Metrom’s Vessel**Deeproot CanopyVery Hard
**Seraphon**Unlocked by ranking up in the Church of RaphionHard
**Arkhaia**Unlocked by ranking up in the Cult of ThanasiusVery Hard

King Slime

While technically a mini-boss, King Slime remains a notable challenge due to its ability to summon reinforcements. This boss has 400 HP (600 HP if Corrupted) and primarily relies on overwhelming players with swarms of smaller slimes. Its AOE poison attacks can quickly overwhelm unprepared players, so come equipped with cleansing abilities and potions to mitigate the damage. Despite its simplicity, the battle is quick, rewarding players with random Tier 1 equipment and other useful items.

King Slime Location

King Slime spawns after 100 slimes die on the server. It will appear near the city where the last slime was defeated, with a notice on the Quest Board alerting players of its presence. The quest consists of two steps:

  1. Locate King Slime.
  2. Defeat King Slime.

The quest has a 30-minute global cooldown on the server.

King Slime Fighting Strategy

AttacksEnergy CostEffect
Slime Creation1Summons a slime to fight for King Slime.
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