Chaos Zero Nightmare Artifact and Memory Build Guide

Artifacts and Memories in Chaos Zero Nightmare are your main long-term stat and effect systems, similar to relics/gear in other gachas. The basic rule is: build crit/ATK sets on DPS, HP/defense sets on healers and tanks, and effect/utility sets on supports, then refine with good main stats and substats.

How Artifacts and Memory Fragments Work

• Artifacts (weapons/armor/accessories):
  • Provide fixed effects plus main stats and some random substats; often tied to specific archetypes (0‑cost spam, ravaged targets, vulnerable targets, etc.).​
• Memory Fragments:
  • Unlocked at Account Level 25 and equipped as sets on each agent, granting stats and set bonuses.​
  • Higher rarity fragments have more substats and higher upgrade caps; leveling them costs Particles of Memory from simulation stages, shops, Zero System, and dismantling.​

Think of artifacts as your build-defining pieces, and Memory Fragments as your scaling stat engine.

General Stat Priorities by Role

From build examples and tier/beginner guides:​

• DPS (Chizuru, Kayron, Rin, etc.):
  • Main stats: Attack%, Crit Rate, Crit Damage, then attribute damage and damage over time when relevant.​​
  • Subs: Crit Rate, Crit Damage, Attack%, attribute damage, sometimes Speed/AP-related stats.
• Tanks/Frontliners (Amir, Maribell, Khalipe):
  • Main stats: Defense%, HP%, sometimes damage reduction or block-related effects.​
  • Subs: HP, HP%, Defense, Defense%, a bit of Crit if they scale damage off defense (e.g., Amir).​
• Healers (Rei, Mika):
  • Rei example: best Memory Fragments are Healer’s Journey (team HP), Tetra’s Authority (healing output), and Black Wing (bonus attack).​
  • Main stats: HP% (on ideal and desire slots), Defense% on Imagination, plus healing or HP set bonuses.​
  • Subs: HP, HP%, Defense, Defense%; crit is largely wasted here.
• Supports/Controllers (Nia, Beryl, Cassius, Narja):
  • Main stats: often Attack% for damage supports, or HP/Defense if they scale with survivability.​
  • Subs: a mix of offensive stats (crit/ATK) and survivability, depending on how often they’re targeted.

If in doubt: DPS = crit/ATK, healers = HP/healing, tanks = DEF/HP, supports = mix.

Example Artifact Choices

The beginner/tier build guide outlines common artifact patterns:​

• 0‑cost / spam DPS (e.g., Chizuru builds):
  • Weapon: Foggy Crystal Ball – increases damage of 0‑cost cards by 40%.​
  • Armor: flex survivability.
  • Accessory: Multifaceted Parallel Universe Nexus or Emblem of an Exceptional Entity for big damage multipliers.​
• Ravaged/Vulnerable-focused DPS (e.g., Amir, other bruisers):
  • Weapon: Twin Swords of Great and Lesser Evil – +30% damage vs ravaged targets.​
  • Armor: flex defensive item.
  • Accessory: anything that boosts damage, e.g., Mask of Flames (+35% vs vulnerable targets) or Verdant Night (+ATK and DEF).​
• AoE / multi-enemy scalers (Rin-type builds):
  • Weapon example: Formica’s Broken Spear – +6% damage per enemy, great in multi-wave fights.​
  • Armor: sustain pieces like Titan Combat Suit (HP recovery when hit) or Contaminated Helmet for HP/DEF.​

Use artifacts whose special effect matches your core card mechanic: 0‑cost focus, ravage/vulnerable, multi-target, etc.

Memory Fragments: Farming, Sets, and Crafting

• Unlock and farming:
  • Memory Fragments become available at Account Level 25 and are farmed from Simulation stages (e.g., Phase, Glory Authority, Civilization, etc.), each with its own set bonuses.​
• Upgrading:
  • Use Particles of Memory to level fragments; rarities determine max level and number of substats.​
• Crafting:
  • You can craft fragments from Traces of Memory:
    • Random part of a specific set.
    • Chosen part of a specific set.
    • Chosen part with a selected main stat of a specific set (more expensive).​

For important units, craft fragments to guarantee correct set and main stat, then roll for good substats.

Practical Build Tips

• Start simple:
  • On early fragments, prioritize correct main stats (ATK% or HP%/DEF%) over perfect substats. Upgrade only good pieces once you have more options.​​
• When to farm Memories:
  • Guides suggest waiting until you can reliably clear Memory stages before heavy farming; early on, advance story and core gear first, then commit stamina.​​
• Reuse logic across characters:
  • The same crit/ATK Memory sets used on Chizuru-style DPS often work for other carries; similarly, HP/heal sets like Healer’s Journey + Tetra’s Authority are widely useful on support healers like Rei.

Following this structure, role-based stat priorities, matching artifacts to card mechanics, and targeted Memory farming/crafting, gives you efficient, flexible builds that scale well into higher Chaos and Zero System content in Chaos Zero Nightmare.