Some Boss fights in Code Vein 2 are waiting for you the moment you enter a room. Others only appear after you've interacted with a cocoon, completed a past-era Bond, or made a Timeline Shift Decision that determines which form of the Boss you face at all.
With 34+ Boss encounters tracked across every map before Load more — all with exact arena locations and quest prerequisites — MapMaster's Boss guide is the definitive reference for planning your 100% completion run.
Mandatory Bosses block story progression directly. Edward the Lost Corporal in the Ruins, Resurgence Abomination in the Water Treatment Plant, Mutated Survivor Bernd at Josée's Outpost, Forma Engine Goliath in the Cliffside Ruins, and the Tainted Scout and Tainted Assassin pair in Pioneer Castle are all mandatory gates — defeat them or the story doesn't advance.
The Tainted Assassin is the only Boss in the guide that spawns mid-fight: it appears directly after you defeat the Tainted Scout in the room below, so prepare for both before entering.
Optional Bosses inhabit dungeon arenas throughout the Continent and its surrounding locations.
They're not required for story progression but reward Blood Codes, rare equipment, and progression in Iris's Request side quests.
Beastlust Addict at the top of Arcade Ruins, Gustave the Cultist Priest in the Mountain Underground Facility, Logan the Pioneer Royal Guard in the Underground Shelter on Outskirts, Wandering Revenant Hunter x2 at the Frontier Observation Post — all optional, all tracked.
The three major Boss chains — Slaying the Hero Josée, Slaying the Hero Lyle, and Slaying the Hero Holly — each drive a complete Main Quest arc with multiple dungeon Bosses building toward a final encounter.
Josée the Blind Hero is preceded by the Darkborn Leader and Metagen Remnant. One-Armed Hero Lyle is preceded by Bernard the Dead-Eyed Retainer and Ravenous Predator.
Hero Holly the Reaper is preceded by three separate Holly's Pathos encounters across the Abandoned Hilltop Church, Snowy Mountain Amusement Park, and Forest Complex.
Each Hero Boss drops a unique Hero Blood Code on defeat. The form of each Hero — and sometimes their location — can shift based on your Timeline Shift Decision choices in the past.
| Name | Map Location | Details |
|---|---|---|
| Hero LylePioneer CastleHero Lyle | Pioneer Castle | Available after completing Lyle's Broken Bond. Location Submitted By: AxtasisN7 |
| Edward the Lost CorporalRuinsEdward the Lost Corporal | Ruins | Edward the Lost Corporal is the boss found in the Ruins. It is a mandatory boss you'll have to defeat to progress the story. |
| Resurgence AbominationWater Treatment PlantResurgence Abomination | Water Treatment Plant | The Resurgence Abomination is the boss found in the Water Treatment Plant. It is a mandatory boss you'll have to defeat to progress the story. |
| Franz the Dejected AssailantMagMell IslandFranz the Dejected Assailant | MagMell Island | The Dejected Assailant is an optional boss; you can fight on Magmell Island while working on completing Timeline Shift Decision: Noah. If you can't handle him the first time, you can return to him later. He will be waiting on the ground floor of the Forma Storage Tower. Availability:
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| Mutated Survivor BerndJosee's OutpostMutated Survivor Bernd | Josee's Outpost | Mutated Survivor Bernd is the boss found in Josee's Outpost. It is a mandatory boss you'll have to defeat to progress the story. |
| Darkborn LeaderSeized SubstationDarkborn Leader | Seized Substation | Found on the roof of the Seized Substation. The Darkborn Leader is a mandatory boss you'll have to defeat to progress Slaying the Hero Josée main quest. |
| Putrid DarkbornCliff Underground RuinsPutrid Darkborn | Cliff Underground Ruins | Putrid Darkborn is an optional boss found in the Cliff Underground Ruins on MagMell Island. To enter the dungeon, first you must defeat the Dejected Assailant, and progress Timeline Shift Decision: Noah. |
| Alexis the Heartless BodyguardEast Bay Underground RuinsAlexis the Heartless Bodyguard | East Bay Underground Ruins | Alexis the Heartless Bodyguard is an optional boss found in the East Bay Underground Ruins on MagMell Island. To enter the dungeon, first you must defeat the Dejected Assailant, and progress Timeline Shift Decision: Noah. |
| Over-Boosted AbominationThe ContinentOver-Boosted Abomination | The Continent | The Over-Boosted Abomination is a mandatory boss you'll need to defeat to complete Iris's Request: Sunken City. He is found on the top floor of the ruined building. |
| Forma Engine GoliathCliffside RuinsForma Engine Goliath | Cliffside Ruins | The Forma Engine Goliath Boss is waiting in the large courtyard of the Cliffside Ruins. It is a mandatory boss you'll need to deal with to progress through the dungeon. |
| Metagen RemnantSunken PylonMetagen Remnant | Sunken Pylon | The Metagen Remnant is the final boss in the Sunken Pylon dungeon. It is a mandatory boss for progressing the Slaying the Hero Josée main quest. After defeating the boss, you'll be automatically transferred to the Continent. Make sure you switch to our Continent interactive map to continue your exploration. |
| Josée the Blind HeroJosee's OutpostJosée the Blind Hero | Josee's Outpost | Josée the Blind Hero is a mandatory boss you'll need to defeat to progress the Slaying the Hero Josée main quest. Josée the Blind Hero spawns inside Josée's Outpost after interacting with Josée's cocoon. |
| Bernard the Dead-Eyed RetainerAbandoned LandBernard the Dead-Eyed Retainer | Abandoned Land | The Bernard Dead-Eyed Retainer Boss is waiting in the large, open area of the Abandoned Land. It is a mandatory boss you'll need to deal with to progress Slaying the Hero Lyle main quest. |
| Ravenous PredatorCrystal GrottoRavenous Predator | Crystal Grotto | The Ravenous Predator Boss is waiting in the open area of the Crystal Grotto. It is a mandatory boss you'll need to deal with to progress Slaying the Hero Lyle main quest. |
| Tainted ScoutPioneer CastleTainted Scout | Pioneer Castle | Tainted Scout is a boss found in Pioneer Castle. It is a mandatory boss you'll have to defeat to progress the story. |
| Tainted AssassinPioneer CastleTainted Assassin | Pioneer Castle | Tainted Assassin is a boss found in Pioneer Castle. It is a mandatory boss you'll have to defeat to progress the story. This boss spawns after defeating the Tainted Scout in the room below. |
| One-Armed Hero LyleThe ContinentOne-Armed Hero Lyle | The Continent | One-Armed Hero Lyle is a mandatory boss you'll need to defeat to progress the Slaying the Hero Lyle main quest. One-Armed Hero Lyle spawns inside Forward Base One after interacting with Lyle's cocoon. |
| Over-Boosted WerebeastPlagued VillageOver-Boosted Werebeast | Plagued Village | The Over-Boosted Werebeast is a mandatory boss you'll need to defeat to complete Iris's Request: Undead Forest. He is found in the eastern courtyard in the Plagued Village. |
| Resurgence ZealotGorge CaveResurgence Zealot | Gorge Cave | Found in the open area. After defeating the boss, you end up on the Continent in 2277: The Present. |
| Over-Boosted Golden WerebeastThe ContinentOver-Boosted Golden Werebeast | The Continent | The Over-Boosted Golden Werebeast is a mandatory boss you'll need to defeat to complete Iris's Request: Corroded Scar. He is found next to the Western Plateau Military Camp. |
| Holly's PathosAbandoned Hilltop ChurchHolly's Pathos | Abandoned Hilltop Church | Holly's Pathos is the boss in the Abandoned Hilltop Church dungeon. It is a mandatory boss for progressing the Slaying the Hero Holly main quest. |
| HollySnowy Mountain Amusement ParkHolly | Snowy Mountain Amusement Park | Holly's Pathos is the boss in the Snowy Mountain Amusement Park dungeon. It is a mandatory boss for progressing the Slaying the Hero Holly main quest. |
| Holly's PathosForest ComplexHolly's Pathos | Forest Complex | Holly's Pathos is the boss in the Forest Complex dungeon. It is a mandatory boss for progressing the Slaying the Hero Holly main quest. |
| Hero Holly the ReaperThe ContinentHero Holly the Reaper | The Continent | Hero Holly the Reaper is a mandatory boss you'll need to defeat to progress the Slaying the Hero Holly main quest. Hero Holly the Reaper spawns inside Withered Greenhouse on the Continent after interacting with Holly's cocoon. |
| Beastlust AddictArcade RuinsBeastlust Addict | Arcade Ruins | Beastlust Addict is an optional boss found on the top floor of the Arcade Ruins. |
| Gustave the Cultist PriestMountain Underground FacilityGustave the Cultist Priest | Mountain Underground Facility | Gustave the Cultist Priest is an optional boss found in the large room on the lower level of the Mountain Underground Facility. |
| Logan the Pioneer Royal GuardUnderground Shelter on OutskirtsLogan the Pioneer Royal Guard | Underground Shelter on Outskirts | Logan the Pioneer Royal Guard is an optional boss found in the large room on the lower level of the Underground Shelter on Outskirts. |
| Reuben the Pioneer CaptainRiverport Watch FortReuben the Pioneer Captain | Riverport Watch Fort | Reuben the Pioneer Captain is an optional boss found in the large room on the lower level of the Riverport Watch Fort. |
| Harrison the Pioneer SoldierNorthern Watch FortHarrison the Pioneer Soldier | Northern Watch Fort | Harrison the Pioneer Soldier is an optional boss found in the large open area on the top level of the Northern Watch Fort. |
| Metagen RemnantMountain HamletMetagen Remnant | Mountain Hamlet | Metagen Remnant is an optional boss found in the large open area at the end of the Mountain Hamlet. |
| Masterless SoldierRiverside Church RuinsMasterless Soldier | Riverside Church Ruins | Masterless Soldier is an optional boss found in the large open area at the end of the Riverside Church Ruins maze. |
| Scarlett the Incarnation of LustPlagued Village: Underground FacilityScarlett the Incarnation of Lust | Plagued Village: Underground Facility | Scarlett the Incarnation of Lust is an optional boss found in the large open area at the end of the Plagued Village: Underground Facility. |
| Wandering Revenant Hunter x2Frontier Observation PostWandering Revenant Hunter x2 | Frontier Observation Post | The two Wandering Revenant Hunters are the optional bosses found in the large room on the top level of the Frontier Observation Post. |
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