Aside from the 16 story bosses at the end of each of the missions in The First Berserker: Khazan, there are 22 optional side bosses to battle. Bosses are a consistent source for various pieces of gear sets, and you will likely want to farm them for those, as well as other materials.
This guide is a complete listing of every boss in The First Berserker: Khazan, split between story and optional groups.
Story Bosses
| Boss | Location | Region | Mission |
|---|---|---|---|
| Yetuga | Mount Heinmach | Charnak Mountain Range | Banished Hero |
| Blade Phantom | Stormpass | Charnak Mountain Range | Trials of the Frozen Mountain |
| Viper | Embars Ruin | Charnak Mountain Range | Forgotten Location |
| Volbaino | Phraugh Village | Charnak Mountain Range | First Act of Revenge |
| Aratra | Skoffa Cave | Charnak Mountain Range | Strange Stench |
| Rangkus | Palemion Citadel | Pell Los Plateau | Traitor Revealed |
| Maluca | Nadin Quarry | Pell Los Plateau | Veiled Knives |
| Elamein | El Ravaca Village | Pell Los Plateau | Devoured Village |
| Shactuka | Linon Mine | Pell Los Plateau | Inconceivable Truth |
| Trokka | Lake City Aldevir | Heart of Pell Los | Witch’s Castle |
| Bellerain | Raphalan Mountains | Heart of Pell Los | Hermit Mountains |
| Skalpel | Vaisar Gate | Heart of Pell Los | Corruptors’ Fortress |
| Princess Ilyna | Rovelion Imperial Theater | Heart of Pell Los | Strange Melody |
| Hismar | Capital City Vitalon | Vitalon Capital of the Empire | Fall of the Empire |
| Reese | Great Location | Vitalon Capital of the Empire | Bloodied Sanctuary |
| Ozma Phase 1-3 | Imperial Palace | Vitalon Capital of the Empire | Master of Chaos |
Side Bosses
Access to optional side bosses require certain specific missions to be completed first, whether story or bonus side missions.
| Boss | Location | Region | Mission | Mission Completion Req. |
| Keshta the Unyielding | Top of Stormpass | Charnak Mountain Range | Stormpass’ Phantom of Combat | Trials of the Frozen Mountain |
| Specter of Bhangau | Bhangau Residence | Charnak Mountain Range | Night of Tragedy | First Act of Revenge |
| Bearius | Spiders’ Tomb | Charnak Mountain Range | Blacksmith’s Heirloom | Strange Stench |
| Xaldin | Nameless Cavern | Pell Los Plateau | Human Xilence | Veiled Knives |
| Mutated Xilence | Abandoned Citadel | Pell Los Plateau | Final Conquest | Human Xilence |
| Bringkus | Knivesveil Hideout | Pell Los Plateau | Pavel’s Final Words | Devoured Village |
| Yeturak | Linon Mine No. 2 | Pell Los Plateau | Escaping Linon Mine | Inconceivable Truth |
| Sergei | Linon Mine Labor Camp | Pell Los Plateau | Last Command | Escaping Linon Mine |
| Yerid the Completed | El Ravaca Sector No. 4 | Pell Los Plateau | Why Have You Forsaken Us? | Inconceivable Truth |
| Failed Creation | Aldevir Central District | Heart of Pell Los | Lacrima | Witch’s Castle |
| Gwydo | Ivy Annex | Heart of Pell Los | Unrequited Love | Witch’s Castle |
| Reaper | Wastus Canyon | Heart of Pell Los | Atlante the Precise | Hermit Mountains |
| Mutated Rosha | Skalpel’s Secret Office | Heart of Pell Los | Crimson Trace | Corrupted Fortress |
| Remnant of Elamein | Darion Castle | Heart of Pell Los | Transcendental Sword | Corrupted Fortress |
| The Ninety-Ninth Owl | Annex of the Grand Central Theater | Heart of Pell Los | Centurial Order | Strange Melody |
| Tanya | Merchant Group Disappearance Site | Heart of Pell Los | Remnants of Chaos | Strange Melody |
| Cursed Boris | Outskirts of Vitalon | Vitalon Capital of the Empire | Disobedience | Fall of the Empire |
| Netherworld Jocko | Vitalon Underground Passage | Vitalon Capital of the Empire | Charon’s Chains | Fall of the Empire |
| Netherworld Tigron | Vitalon Underground Passage | Vitalon Capital of the Empire | Charon’s Chains | Fall of the Empire |
| Netherworld Aratra | Vitalon Underground Passage | Vitalon Capital of the Empire | Charon’s Chains | Fall of the Empire |
| Gilsan | Vitalon Residence | Vitalon Capital of the Empire | Birth of Evil | Fall of the Empire |
| Specter of Pleuvious | Great Underground Ruins | Vitalon Capital of the Empire | The Vow | Collect Disk Fragments from: Witch’s CastleCorruptors’ FortressStrange Melody Complete: Fall of the Empire |
Those are all 38 known bosses in The First Berserker: Khazan with their locations and unlock requirements.
