Trauma Code guide for Chaos Zero Nightmare (CZN). See how to unlock Trauma Code, character story events, battle missions, limited-time rewards, walkthrough tips, and more in CZN.
CZN Trauma Code Latest Events
Law of Preserved Hope in Confinement
| Event Period | Start: January 14, 2026 (UTC-0) End: Febuary 3, 2026 (UTC-0) |
|---|---|
| Limited Time Rewards | Memories with Narja - Crystals - Great Growth Stone of Instinct - Advanced Controller Manual - Advanced Controller Certificate - Unit - Coordinates of Record |
What is a Trauma Code?
Stories of Specific Combatants
The Trauma Code is a story-based, narrative-driven mode. Like the main story, progression involves alternating between story segments and battles.
Battle Missions Are Also Unlocked
Unlike regular missions, battle missions are unlocked simultaneously during the Trauma Code event. By completing battle mission objectives, you can earn rewards such as Crystals.
Obtain Rewards for a Limited Time
The Trauma Code has a set duration. By clearing the story and Event battles during this period, you can obtain limited-time rewards.
Still Unlockable After Event
After the event period ends, you will no longer be able to obtain the limited-time rewards, but you can still play through the Trauma Code. You can unlock each Trauma Code by consuming a Special Security Code, which can be purchased from Nono's Shop.
Trauma Code Unlock Conditions
Unlocked by Clearing Chapter 2 #05-1
The Trauma Code is unlocked by clearing Chapter 2 #05-1 [Epione Center]. The Mission right before this includes a battle in Chaos, so make sure your characters are well-trained.
Main Mission GuideChaos Zero Nightmare Related Guides
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Galactic Disaster 
S1 Forbidden Catalyst
The Great Rift
Nebula Distortion
Early Game Guide
Daily Tasks
Recommended Gacha Banner
Ark City Guide
Card Epiphany Activation
How to Use Ego Skill
Stress Management
Weakness Attribute Guide
Safe Zone Guide
How to Restore Aether
How to Raise Captain Grade
ID Card Settings
Battle Pass (Arkhianon Supply) Guide & Should You Buy?
Simulation Guide
Twin Star's Shadow Guide
How to Download & Sync Data
Deep Trauma Guide
Latest Updates 
Intermediate Captain Promotion Guide
Unigram Guide
Character Enhancement Guide
How to Set and Upgrade Partner
How to Upgrade Potential
How to Use Save Data
How to Upgrade Manifest Ego
Memory Fragments 
Prism Modules
Daily Reset Time
Zero System
Counseling Guide
Omega Codes
Redeem Codes
