Home News > "Arcane Lineage Bosses: Full Defeat Guide" (Note: "Ultimate" was exchanged for "Full" to meet character constraints while preserving meaning.)

"Arcane Lineage Bosses: Full Defeat Guide" (Note: "Ultimate" was exchanged for "Full" to meet character constraints while preserving meaning.)

by Emery Dec 21,2025

Boss encounters in Arcane Lineage range from beginner-friendly battles to cooperative challenges requiring strategic teamwork. Each presents distinct mechanics demanding tactical planning and perseverance, rewarding victorious players with premium loot and gear. Use our comprehensive Arcane Lineage Boss guide to gear up for these formidable fights.

Arcane Lineage Boss Directory King Slime King Slime Location King Slime Combat Tactics King Slime Rewards Yar’thul, the Blazing Dragon Yar’thul Location Yar’thul Battle Approach Yar’thul Rewards Thorian, the Rotten Thorian Location Thorian Combat Strategy Thorian Rewards Metrom’s Vessel Metrom’s Vessel Location Metrom’s Vessel Tactics Metrom’s Vessel Rewards Arkhaia and Seraphon

Arcane Lineage Boss Directory

Boss	Location	Difficulty
King Slime	Around the City	Easy
Yar’thul, the Blazing Dragon	Inside Mount Thul	Normal
Thorian, the Rotten	Deep in the Cess Grounds	Hard
Mettrom’s Vessel	Deeproot Canopy	Very Hard
Seraphon	Unlocked by ranking up in the Church of Raphion	Hard
Arkhaia	Unlocked by ranking up in the Cult of Thanasius	Very Hard