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Agent leveling in Zenless Zone Zero is the process of raising an agent’s level, Core Skill, combat skills, W-Engine, and Drive Discs, and the right order is set by Shiyu Defense‘s requirement for two separate working teams rather than by how strong you can make a single favorite. This guide is written against version 3.1 and breaks down what to invest in first, when to switch focus to W-Engines, when Drive Discs actually start mattering, where the materials come from, and why most new Proxies hit a wall that has nothing to do with farming enough.
En resumen
- Build toward two functional teams, not one maxed agent — Shiyu Defense’s later Nodes require two squads to clear.
- Order of investment: Agent Level and Ascension first, then Core Skill, then the skills your rotation actually uses, then W-Engine, then Drive Discs last.
- The real bottleneck is Battery Charge and weekly resets, not raw material scarcity — that’s calendar time, not a farming problem.
- Skill Chips, Certification Seals, and W-Engine Components are attribute or specialty-specific — check the exact agent before you stockpile.
- Version 3.1 is the baseline here; older guides written for earlier patches describe a different Shiyu Defense and material spread.
What Is Agent Leveling in Zenless Zone Zero?
Agent leveling covers every system that makes an agent hit harder or survive longer: raising their level with EXP items, breaking through level caps via Ascension, upgrading their Core Skill and the five combat skills (Basic, Dodge, Assist, Special, Chain), then gearing them with a W-Engine and six Drive Discs. Each system draws from a different material pool and unlocks at a different point in an agent’s growth curve, which is exactly why the order you tackle them in matters more than how much total time you sink in. Players care about the order specifically because Battery, Dennies, and EXP are always tighter than the number of things asking for them, and getting the order wrong is the fastest way to feel stuck.
| Investment | What It Gives | When to Start | What Limits It |
|---|---|---|---|
| Agent Level | Raises base ATK, DEF and HP every level | Day one, on the agent you've confirmed is going into a team | Investigator Log tier and Dennies |
| Ascension | Removes the level cap every 10 levels and unlocks extra stat lines | The moment you hit a level wall | Specialty-specific ascension materials, mostly from Combat Simulation |
| Core Skill | Scales the percentages on the agent's passive, often the single biggest damage or utility jump | Right after the first Ascension on a confirmed main | Same ascension-material pool as above |
| Combat Skills | Raises numbers on Basic Attack, Dodge, Assist, Special and Chain Attack | Once the kit is rotation-ready, skill by skill | Attribute-specific Skill Chips and Dennies |
| W-Engine | Adds a large flat stat plus a passive effect | After the skills the rotation actually leans on are up | W-Engine EXP Materials, then Components every 10 levels for modification |
| Drive Discs | Six gear pieces with rolled main and sub stats | Last, once the agent's role in a team is locked in | RNG sub-stats, Tuning Calibrators for main-stat control |
Where to Get Agent Leveling Materials in Zenless Zone Zero
Most of what an agent needs comes from a small set of repeatable sources rather than one-off drops. There are 15 Agent Ascension Materials split across five Specialties, three per Specialty, and most of these come from the Combat Simulation’s Agent Promotion mode, which is also where you pick up W-Engine ascension items through its Modification mode. Skill Chips are tied to an agent’s attribute rather than their specific name, so multiple agents of the same element draw from the same Chip pool, and Investigator Logs — the generic EXP items — come in three tiers that hand out roughly 100, 600, and 3000 Exp respectively. Video Store Promotion adds a smaller passive stream, but it only unlocks once you’ve built that specific agent’s trust and only feeds their own attribute materials. The Shiyu Defense endgame guide covers how these builds actually get tested once they’re done.
Consejo
Clear the free weekly sources — Notorious Hunt attempts, Hollow Zero, and daily commissions — before you spend a single point of Battery Charge on Combat Simulation. They cost no energy and stack materials you’d otherwise be burning charge to get.
| Conseguir | What You Get | Requirement | Who It Suits |
|---|---|---|---|
| Combat Simulation | Ascension materials, W-Engine Components | Battery Charge, Inter-Knot rank for higher tiers | Anyone actively promoting an agent this week |
| Weekly Notorious Hunt | Boss-tied ascension and core materials | Free weekly attempts, no Battery cost | Targeting one agent's late promotions |
| Hollow Zero | Drive Discs, Dennies, generic EXP | Free access, resets on a cycle | Disc farming once a comp is set |
| Video Store Promotion | Agent-specific attribute materials | Trust level built with that agent | Passive top-up, no active farming |
| Daily/Weekly Commissions and login | Dennies, Investigator Logs, base EXP | Just logging in and clearing errands | Baseline leveling for every roster slot |
Best Agent Leveling Farming Methods in Zenless Zone Zero
| Method | Speed | Effort | Best For |
|---|---|---|---|
| Battery-dump Combat Simulation runs | Fast, high yield per charge spent | Medium — pick the highest difficulty you can clear | Whoever needs ascension materials right now |
| Weekly Notorious Hunt (free attempts) | Slow but zero-cost | Low | Boss-specific materials for one targeted agent |
| Hollow Zero disc runs | Medium | Medium to high, needs a working team already | Drive Disc farming once a build is locked |
| Video Store Promotion loop | Slow, passive | Low | Topping up attribute materials without spending charge |
| Limited-time event material giveaways | Variable, often a burst | Low | Whatever specialty the current event is themed around |
Step-by-Step: Weekly Agent Leveling Routine
Sigue estos pasos para hacerlo rápidamente.
-
1
Clear free weekly content first
run your Notorious Hunt attempts, Hollow Zero progression, and daily commissions before touching Battery Charge, since none of it costs energy.
-
2
Spend Battery on your confirmed main
run Combat Simulation Agent Promotion and W-Engine Modification stages targeting the agent you're actively building this week, not whoever you pulled last.
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3
Push Ascension and Core Skill before skills
every level wall you clear and every Core Skill rank you add outscales spreading points across five combat skills too early.
-
4
Rotate spending toward your second team's anchor
once your first agent's kit is rotation-ready, redirect the next batch of materials to the agent who fills the gap in team two, not a second copy of team one's role.
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5
Save Drive Disc tuning for last
use Tuning Calibrators only once you know the agent's final slot in a team, since sub-stat RNG on a bench agent is wasted currency.
Agent Leveling Rewards and What You Actually Unlock
Why Core Skill Outpaces Raw Level
Core Skill upgrades scale the percentages baked into an agent’s passive rather than flat stats, which is why one rank on a support’s Core Skill can outperform several agent levels’ worth of ATK on a bench unit. It draws from the same ascension-material pool as leveling itself, so there’s no extra farming cost to prioritizing it right after each level-cap break.
What Video Store Promotion Actually Feeds
Video Store Promotion only returns materials tied to that specific agent’s attribute, and only once you’ve built enough trust with them to assign them to the store. It’s a passive top-up, not a primary source — treat it as a supplement to Combat Simulation runs, not a replacement.
| Reward | How You Get It | Why It Matters |
|---|---|---|
| Higher base ATK/DEF/HP | Investigator Logs and Dennies | The floor every other multiplier sits on top of |
| Passive/Core Skill scaling | Ascension plus Core Skill upgrades | Often the single biggest damage or utility jump per material spent |
| Rotation damage or utility | Skill Chips on skills you actually press | Where the kit's feel and output actually change |
| Flat stat plus engine passive | W-Engine leveling and Modification | Second-largest stat chunk after Ascension, and swappable across agents sharing a specialty |
| Tuned main/sub stats | Drive Disc leveling and Advanced Tuning | The long-tail min-max layer, lowest return this early |
Common Misconceptions About ZZZ Agent Leveling
Myth: A Maxed Agent Guarantees a Shiyu Defense Clear
Shiyu Defense’s later configurations split enemy weaknesses across stages in a way that requires you to build two teams to enter the challenge and clear the stage. A single agent leveled to the ceiling still only occupies one slot in one of those two teams — the other three or six slots need to be functional too, or the second half of the run simply fails regardless of how strong your favorite is.
Myth: W-Engine Star Rank Matters More Than Its Level
Star rank (upgraded with duplicate copies) and level (upgraded with EXP materials plus Modification) are separate tracks. A level-1 five-star engine on the wrong agent does less than a properly leveled one-star engine on the right agent — prioritize getting the base level and modification tier up before chasing copies.
Myth: Materials Are the Real Bottleneck
This is the one that trips up new Proxies specifically. Combat Simulation, the main ascension-material source, is gated by Battery Charge, and the charge ticks up by 1 every 6 minutes, which works out to exactly 24 hours for a full restore from zero. That means the actual limiter isn’t how much you farm in a single session — it’s how many days pass. Materials regenerate on a calendar, not on effort, which is why cramming a weekend of farming can’t substitute for the drip-feed of daily and weekly resets.
Advertencia
Version 3.1 changed how some ascension and Shiyu Defense specifics work compared to earlier patches. A guide written for version 2.x or earlier may list different material names, different Frontier team requirements, or an outdated Battery cap — cross-check anything with a version stamp before trusting it.
Our Take: Is Front-Loading One Agent Worth It?
Nuestra opinión
No — width beats depth once you’re pushing past the early game.
The single most common mistake is dumping every spare material into one agent until they’re capped, then hitting Shiyu Defense and discovering that agent is dead weight in the second team’s comp. Ascension and Core Skill on a confirmed main agent are worth front-loading; everything past that — full skill maxing, a signature W-Engine, perfectly tuned discs — has diminishing returns compared to getting a second team’s core three agents to a merely functional state. The official Zenless Zone Zero wiki and HoYoverse’s own patch notes are the fastest way to confirm whether a specific material name or threshold changed since this was written.
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