In the neon-soaked streets of New Eridu, every Agent carries a spark of unrealized brilliance—quiet, patient, and just waiting for the right push. Since its launch, Zenless Zone Zero has carved out its own identity in the HoYoverse family, trading the open-world vistas of Genshin Impact and the turn‑based tempo of Honkai: Star Rail for a slick, combo‑driven brawl. But underneath all the stylish chaos lies a familiar truth: pushing your Agents to their absolute ceiling is what separates a capable squad from a legendary one. In 2026, that ceiling remains set at level 60.
Reaching the max level of 60 isn’t a straight shot. It is a journey that asks a Proxies to juggle multiple resources, time their ascensions, and keep a watchful eye on the Inter‑Knot reputation. HoYoverse loves its soft gates, and here they come dressed as Investigator Logs, Certification Seals, and reputation gates—each one a hurdle that, once crossed, makes your Agent hit just a little harder, move a little faster, and survive a whole lot longer.
The Bread and Butter: Investigator Logs
Every level from 1 to 60 runs on experience, and in Zenless Zone Zero that experience comes in the form of Investigator Logs. Like the Hero’s Wit of Teyvat or the Traveler’s Guides of the Astral Express, these logs are the universal fuel for agent growth. They come in three flavors:
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Trainee Investigator Log – grants 100 EXP
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Official Investigator Log – grants 600 EXP
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Senior Investigator Log – grants a hefty 3,000 EXP
Earning them is part of the daily rhythm of a Proxies life: combat simulations, routine cleanup commissions, event rewards, and the occasional generous gift from the Hollow Investigation Department all chip in. The real trick, though, is patience. Dumping a mountain of Senior logs into a fresh Agent might feel satisfying, but those 3,000‑EXP bricks are best saved for the later stretches—the dreaded 50‑to‑60 grind where each level becomes a hungry beast.
Promotion Milestones and Certification Seals
If Investigator Logs are the soup, then Certification Seals are the spoon that lets you actually eat it. At levels 20, 30, 40, and 50, an Agent simply refuses to grow any further without a Promotion. This is the Ascension mechanic in all but name, and it demands specific seals: Basic, Advanced, and eventually Elite Certification Seals. Gathering them means diving into specialized resource stages, where the fights are tailored to test your current team’s limits.
Boy, does it feel bittersweet when an Agent is stuck at 50, staring at a locked experience bar, and all you need is one more Elite seal. It is a little like having the key to a treasure chest but forgetting the combination—everything is right there, yet nothing moves until that final piece clicks into place. The seal rarity climbs with each milestone, so savvy Proxies often pre‑farm during downtime, stocking their inventories before a new banner Agent even arrives.
The Inter‑Knot Level: The Gatekeeper
There is another, quieter threshold that many newcomers miss: an Agent cannot outgrow the Proxies own reputation. The Inter‑Knot Level serves as a hard cap. At Inter‑Knot Level 10, your Agents can reach level 20; at Level 20, the cap rises to 30, and so on, all the way to Inter‑Knot 50 unlocking the final push to 60.
And here is where HoYoverse inserts a little test of character: from Inter‑Knot Level 20 onward, simply earning reputation points is not enough. You must clear a Rank‑Up mission—a solo trial that gauges whether you truly understand the combat system. It is the Zenless Zone Zero equivalent of Genshin’s Ascension Quest, a moment of truth where you can either sail through or, well… let’s just say some Proxies need a few extra cups of coffee before attempting it.
Tangible Rewards for Hitting Milestones
Leveling is its own reward, but the game is not shy about handing out extra treats. At levels 20, 40, and the grand peak of 60, an Agent earns promotion rewards that include premium currency and rare upgrade materials. To claim them, you tap the colorful film‑reel icon on the upper right corner of the Agent profile screen—it practically winks at you when a reward is ready.
Those rewards can be a lifeline. That unexpected flow of Dennies or tuning modules often arrives right when you are weighing whether to pull for a new W‑Engine or invest in Drive Discs. It is the game’s quiet way of saying, “You took your Agent this far—now go make them truly shine.”
Beyond Level 60: The True Endgame
Reaching 60 is an achievement, but it is never the finish line. A max‑level Agent still needs a carefully chosen W‑Engine and a set of Drive Discs that complements their playstyle. Combine that with upgraded skills—Talents, as the game calls them—and suddenly that level 60 Zhu Yuan or Lycaon feels like a completely different character from the one you first pulled. The difference between a freshly promoted 60 and a fully optimized 60 is night and day, and it is that gap where the most memorable Hollow runs are forged.
In the end, the path to 60 is a marathon, not a sprint. It demands planning, a little luck with seal drops, and enough battle sense to clear those Rank‑Up trials. But when you finally see that golden 60 on your Agent’s card, while New Eridu’s neon signs flicker in the background… man, it just hits different. The Hollows feel a touch less menacing, and every dodge counter lands with a confidence that no amount of tutorials can teach.
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