Nightmare difficulty 10, as the highest challenge in the current version of "Matrix Zero Day Crisis," places high demands on BD build integrity, operational precision, and resource allocation. This guide will explain how to clear Nightmare difficulty 10 in "Matrix Zero Day Crisis" using the "Thunder Kyubey Flow" as an example. This is an efficient strategy that relies on the qualitative change mechanism of "Dual Authority Thunder Kyubey," achieving full suppression from the start to the end through the three-dimensional synergy of authority combinations, equipment attributes, and potential keys. Let's take a look.

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1. Core Build: The Qualitative Change Path of Thunder Kyubey Flow
1. Initial Authority Selection (Setting the Tone at the Start)
Mandatory: Summon Shooter Kyubey (Electric Play Rule) — Provides the basic framework for automatic output.

Secondary:
Electromagnetic Shot (Thunder Rule): Highest priority, setting the stage for the chain lightning effect.

Lightning Punishment (Thunder Rule): Alternative option if Electromagnetic Shot is missing, with a lower trigger probability but can serve as a transition.

Pitfall: Reload-related authorities (such as Eros Reload) — conflict with the fire rate bonuses of this build.
2. Mid-Game Authority Combinations (Chain Lightning Formation)
The following 4 types of trigger-based authorities need to be collected to activate the "Thunder Kyubey" synthesis condition:
Trigger Method | Authority Name | Synthesis Contribution |
Normal Attack Trigger | Electromagnetic Shot | Core (35%) |
Dodge Roll Trigger | Lightning Intention | Critical (25%) |
Hit Trigger | Static Shield | Auxiliary (20%) |
C Skill Trigger | Thunder Judgment | Auxiliary (20%) |
Collecting any 3 of these will probabilistically unlock "Dual Authority: Thunder Kyubey" — Normal attacks add chain lightning, covering the entire screen and ignoring walls.


3. Ultimate Transformation: Eight Kyubey Matrix
Potential Key: Must obtain "Endless Barrage" (weapon fire rate ×2), increasing the Kyubey clone limit from 4 to 8.

Authority Synergy: Each 60% additional fire rate generates 1 Kyubey clone (lasting 5 seconds), with DPS increasing by over 400% when all 8 are active.

Output Logic: Main body normal attack → triggers chain lightning → Kyubey clones attack synchronously → secondary chain lightning trigger → loop for instant kills.
2. Equipment and Attributes: Fire Rate Priority Benefit Structure
1. Equipment Selection Tiers
Equipment Type | Priority | Core Attribute | Build Benefit |
Backpack | T0 | Fire Rate + Ammo Capacity | Directly increases Kyubey summon frequency |
Hand Axe | T1 | Global Damage + Critical Damage | Chain lightning benefits from critical damage |
Battery Pack | T1 | Skill Cooldown Reduction | Lowers C skill downtime |
Drone | T2 | Reload Speed | Only select if "Endless Barrage" is not obtained |
2. Attribute Weight Distribution
S Rank: Fire Rate > Thunder Damage > Ammo Capacity
A Rank: Critical Rate > Skill Cooldown
Abandoned Attributes: Weapon Damage, Elemental Resistance — ineffective for Kyubey.
3. Operation Loop: Three-Stage Burst Window Management
1. Regular Stage (Clearing Minions)
Maintain medium-range movement and shooting, using cover to avoid projectiles.
Proactively trigger hit chain lightning: Intentionally take low-risk projectiles to activate "Static Shield" and clear clusters of enemies.
2. Boss Burst Phase (Core Technique)
Phase | Action Sequence | Benefit Effect |
Opening | Dodge roll close to the Boss → triggers Lightning Intention | Adds 3 seconds of paralysis control |
Core Output | Immediately use C skill → summon Thunder Kyubey | Gains 200% chain lightning damage + synchronized Kyubey clones |
Finishing | Normal attack burst until 8 clones are active | Chain lightning trigger frequency reaches peak |
Note: During C skill, immune to control, can tank the Boss's red light skill.
3. High-Pressure Response Strategies
Multiple Elite Monsters Surrounding: Dodge roll to a corner to trigger "Lightning Intention" for mass paralysis, prioritize long-range units.
Lava Terrain: Switch to battery pack equipment, use cooldown reduction for frequent dodge rolls to cross dangerous areas.
4. Resource Decision-Making: The Logic of Gold and Level Bargaining
1. Gold Usage Priority
Refresh Keys (each 500 gold): Until "Endless Barrage" is obtained.

Authority Upgrades: Electromagnetic Shot > Thunder Kyubey > Basic Points for Shooter Kyubey.

Quality Improvement: Buy "Full Quality" in the shop at the end of the level (3000 gold).
Equipment Swap: Consider only if the attribute includes "Fire Rate + Thunder Damage."
2. Level Path Selection
Purple Chest Room: Must enter in N10 difficulty (increases drop rate of Thunder Authority by 30%).
Treasure Map: Only challenge if lacking "Endless Barrage" (low time-to-benefit ratio).
Shop Before Boss: Reserve 1500 gold to ensure 3 key pool refreshes.
However, this build still has two major risk points: If the initial authorities are missing (not obtaining Electromagnetic Shot after 5 attempts), it is necessary to switch to the Electric Play Normal Attack build as a fallback; a mistake during the Boss burst window (missing C skill or dodge rolling into projectiles) will break the output loop. In such cases, rely on the unique "Authority Inheritance" mechanism of N10 — retain unlocked authorities and restart to avoid wasting resources.
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In summary, the guide to clearing Nightmare difficulty in "Matrix Zero Day Crisis" is as described above. Clearing Nightmare difficulty 10 is essentially a dual test of "resource conversion efficiency" and "mechanism execution." The Thunder Kyubey Flow, with its low-threshold transformation point (Dual Authority) and high-upper-limit output structure (Eight Clone Matrix), is one of the best solutions for conquering N10 in the current version. The key to success lies in the seamless connection of the three stages: accurately locking in Electromagnetic Shot at the beginning to lay the foundation for synthesis, collecting four types of trigger authorities in the middle to activate the chain lightning transformation, and ultimately achieving a breakthrough in Kyubey numbers through "Endless Barrage." Give it a try in the game.