In CODE VEIN (2019), the key to collecting Successor Blood Codes is to find and restore the right Vestiges before each boss, then restore that Successor’s memories after the fight. Choosing not to restore the memories awards the corresponding Queen’s body-part code instead, so collecting both outcomes generally means replaying the story. Other codes come from allies, exploration, an ending, or DLC.
How Blood Codes work
Blood Codes define a character’s Gifts and help shape a build. The official CODE VEIN game page describes using Blood Veils to drain enemies and spending the resulting blood to power Gifts. Io can restore and repair Blood Codes and Vestiges.
| # | Preview | Product | Price | |
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| 1 |
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Code Vein II - Xbox Series X | $34.99 | Buy on Amazon |
| 2 |
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Code Vein II: Ultimate Edition - PlayStation 5 | $79.99 | Buy on Amazon |
| 3 |
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Code Vein (PS4) | $25.97 | Buy on Amazon |
| 4 |
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Code Vein (Xbox One) | $14.00 | Buy on Amazon |
This guide is for the original CODE VEIN, not CODE VEIN II. For Successor rewards, restoration is the decisive step: recover the associated Vestige parts in the region, have Io repair the Vestiges, defeat the Successor, and restore the character’s memories in the post-boss sequence. If you do not restore those memories, you receive the matching Queen’s body-part code instead. The available guide source does not establish a way to claim both rewards from the same Successor in one run.
Successor Blood Codes: what to do before each boss
There are four Successor areas to account for. Search each one for its relevant Vestiges before entering the boss fight; do not assume you can make the memory-restoration choice later if the Vestiges were missed. The four areas are identified in the achievement guide.
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- INTENSE AND SATISFYING COMBAT - Dive into adrenaline-fueled battles where reading enemy moves and mastering your arsenal are key to survival. Unleash powerful skills, adapt on the fly, and conquer relentless foes in fights that deliver both intensity and triumph.
- A TALE ACROSS TIME - Embark on a journey that spans both the present and the past as you search for clues to prevent the world’s destruction. Alter the fates of key Revenant characters you encounter in the past, while uncovering lost histories and the hidden truths of the world.
- UNIQUE BATTLE SYSTEM - Experience Code Vein II’s unique gameplay mechanic, where the player drains and acquires blood from enemies to unleash a variety of skills. With the series’ new build system, you can freely customize weapons and skills to suit your own battle styles.
- POWERFUL PARTNER CHARACTERS - Explore the world with trusted and powerful allies who can fight alongside you or enhance your abilities. Each partner brings unique abilities and deep connections that shape your journey.
| Successor area | Prepare before the fight | Post-boss choice and reward |
|---|---|---|
| Cathedral of the Sacred Blood | Find the relevant Vestige parts and have Io repair them. | Restore the Successor’s memories for that character’s Blood Code; do not restore them for Queen’s Ribcage. |
| Ridge of Frozen Souls | Find the relevant Vestige parts and have Io repair them. | Restore the Successor’s memories for that character’s Blood Code; do not restore them for Queen’s Breath. |
| City of Falling Flame | Find the relevant Vestige parts and have Io repair them. | Restore the Successor’s memories for that character’s Blood Code; do not restore them for Queen’s Claw. |
| Crown of Sand | Find the relevant Vestige parts and have Io repair them. | Restore the Successor’s memories for that character’s Blood Code; do not restore them for Queen’s Throat. |
The reward names and choice tradeoff are documented in the achievement guide. If you want the personal Successor codes in your current run, make memory restoration your priority at each battle.
Special base-game unlocks
Demeter
After defeating all four Successors, return to Karen’s location in the Cathedral of the Sacred Blood. The achievement guide says Demeter is available near her then.
Rank #2
- The Ultimate Edition includes: CODE VEIN II, Custom Outfit Pack - Contains 3 costume sets and 1 weapon, Expansion DLC - Mask of Idris, CODE VEIN Character Costume Set - Contains 6 costumes based on characters from the original game, CODE VEIN, CODE VEIN II Digital Mini Artbook & Soundtrack
- INTENSE AND SATISFYING COMBAT - Dive into adrenaline-fueled battles where reading enemy moves and mastering your arsenal are key to survival. Unleash powerful skills, adapt on the fly, and conquer relentless foes in fights that deliver both intensity and triumph.
- A TALE ACROSS TIME - Embark on a journey that spans both the present and the past as you search for clues to prevent the world’s destruction. Alter the fates of key Revenant characters you encounter in the past, while uncovering lost histories and the hidden truths of the world.
- UNIQUE BATTLE SYSTEM - Experience Code Vein II’s unique gameplay mechanic, where the player drains and acquires blood from enemies to unleash a variety of skills. With the series’ new build system, you can freely customize weapons and skills to suit your own battle styles.
Queen
Queen is tied to the true “Dweller in the Dark” ending. The achievement guide says this requires restoring all four Successor memories and Io’s memories. Bandai Namco producer Keita Iizuka notes that “Code Vein features multiple endings” and that player choices affect which ending occurs.
Other Blood Codes: inventory and limits
The community-maintained Blood Code index groups the codes below. It is useful as a checklist of names, but it does not independently verify every pickup location, NPC interaction, or prerequisite. Treat it as an inventory guide rather than a complete step-by-step unlock map.
Rank #3
- Unite to survive: featuring a story driven connected dungeon experience, dive into the world of code vein. Create your own character and choose your partner as you venture out into a world of destruction, overrun by the Lost. Use your combined strength to coordinate your approach and defend each other from surprise attacks or overpowered enemies using your Blood veil and various weapons. Change the feel of the game depending on which partner you choose, each with their own combat style and background story.
- beneath the veil: experience the power of Blood as you use unique Blood veils to drain your enemies to enhance your abilities. Using "gifts" Powered by enemy Blood, players can increase their strength, weaken enemies, and Utilise new weapon abilities and overpowered attacks.
- great challenge brings greater rewards: take on the Lost as you explore the malefic world of code vein. Choose from a myriad of weapons such as bayonets, axes and Spears, to accommodate your favourite battle style. Apply strategy in your attacks through partnered coordination and Blood veil enhancements, ready to bring down the most threatening enemies.
- Starter: Fighter, Ranger, Caster.
- Allies: Queenslayer, Prometheus, Mercury, Hermes, Atlas, Artemis, Eos, Heimdal, Hephaestus.
- Successor-related: Darkseeker, Isis, Queen’s Ribcage, Fionn, Queen’s Breath, Scathach, Queen’s Claw, Harmonia, Queen’s Throat, Demeter.
- Other base-game codes: Berserker, Hunter, Assassin, Survivor, Dark Knight, Warrior, Scout, Ishtar, Queen, Hades.
- DLC: Astrea, Harbinger, Asclepius, Achilles, Surt, Ymir, Pollux, Orion, Váli, Perseus.
For codes not covered by the specific unlock instructions in this guide, use a maintained per-code walkthrough or in-game records to confirm the exact condition. In particular, the index lists Eos but the cited sources do not establish its full Vestige pickup sequence.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.DLC Blood Codes
Bandai Namco says the Season Pass contains three additional content packs, each adding content that includes Blood Codes. The official Hellfire Knight announcement documents two unlocks:
Rank #4
- Unite to survive: featuring a story driven connected dungeon experience, dive into the world of code vein. Create your own character and choose your partner as you venture out into a world of destruction, overrun by the Lost. Use your combined strength to coordinate your approach and defend each other from surprise attacks or overpowered enemies using your Blood veil and various weapons. Change the feel of the game depending on which partner you choose, each with their own combat style and background story.
- beneath the veil: experience the power of Blood as you use unique Blood veils to drain your enemies to enhance your abilities. Using "gifts" Powered by enemy Blood, players can increase their strength, weaken enemies, and Utilise new weapon abilities and overpowered attacks.
- great challenge brings greater rewards: take on the Lost as you explore the malefic world of code vein. Choose from a myriad of weapons such as bayonets, axes and Spears, to accommodate your favourite battle style. Apply strategy in your attacks through partnered coordination and Blood veil enhancements, ready to bring down the most threatening enemies.
- Achilles: In Fiery Oblivion, collect and repair all fragments of its Vestige core.
- Asclepius: It becomes available after purchasing DLC 1, in a new room on the corridor from Crypt Spire toward Provisional Government Outskirts. The room also contains the Fiery Oblivion Depths map.
The official game page names the other packs as Frozen Empress and Lord of Thunder and confirms that they add Blood Codes, but the available sources do not document the exact unlock condition for every code in those packs. DLC codes require access to the relevant content; ownership and availability can depend on your edition and platform.
Plan for a complete collection
Choose your priority before the Successor fights: the personal code or the Queen’s body-part code. If you want the personal codes and the true ending, restore each Successor’s memories and Io’s memories. If you want Queen’s body-part codes, leave the corresponding memories unrestored; that choice affects the ending as well.
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Multiple playthroughs may be needed for both sets of Successor rewards. Bandai Namco confirms that after completing the game, players can restart the story while carrying over Blood Codes and Gifts, making another run a supported way to pursue different choices. Its producer interview explicitly encourages players who have completed the game to try a different ending.
Quick Recap
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