Achievements — Zenless Zone Zero

Achievements are goals players can complete to earn Polychrome rewards. Per miyoushe (verified source), the total is 782 Achievements as of Version 3.1. The community wiki (most recent scrape) records 734 Achievements across 20 groups, totaling 5,120 Polychrome — the two figures differ because they were captured at different points in time; this page states both so neither is hidden. Achievements are split into 4 main categories: Story, City, Tactics, and Exploration.

Per the community wiki, the Story category has 6 sub-groups: Agent Trust, Phaethon's Story, Agent Story, Special Episode, When Opportunities Converge, and Inter-Knot Hot Topic. These achievements are tied to the main storyline, individual character stories (Phaethon being the protagonist's alias), and New Eridu community events.

Per the community wiki, the City category has 6 sub-groups: Proxy Business, Janus Quarter, Waifei Peninsula, Outer Ring, Throne Quarter, and Booastrum. These achievements are tied to exploring and interacting with New Eridu's districts (Janus Quarter, Waifei Peninsula, etc. being named city areas).

Per the community wiki, the Tactics category has 5 sub-groups: Withered Domain, Combat Techniques, Hostile Targets, Combat Achievements, and Lost Void. These achievements relate to combat — clearing combat modes like Withered Domain and Lost Void, defeating specific enemy types (Hostile Targets), and executing combat techniques.

Per the community wiki, the Exploration category has 3 sub-groups: Hollow Exploration Guide, Zero Key, and Investigation Zone Adventures. These achievements relate to exploring the Hollow Zone, collecting/using Zero Keys, and investigation activities within Investigation Zones.

The main reward for completing Achievements is Polychrome — the currency used for gacha pulls (Signal Search). The community wiki notes that completing all 734 achievements (per the community wiki's figure — see the Overview block for the discrepancy with miyoushe's 782) grants a total of 5,120 Polychrome. Each achievement group has its own total Polychrome amount depending on how many achievements it contains.

The community wiki "Achievement" overview page does not list specific hidden-achievement tips per entry — that level of detail lives in the 4 category sub-pages (Achievement/Story, Achievement/City, Achievement/Tactics, Achievement/Exploration). As a general principle: most Achievements unlock naturally while progressing the story, exploring the map, and clearing combat content during normal play; a smaller number require specific actions (e.g. rare interactions in Investigation Zones, or high ranks in Withered Domain/Lost Void). Specific hidden-achievement tips per entry: not published on this overview page.