Arknights Endfield Endgame Guide
The full hub for Endfield's late-game content. Three permanent combat modes, one community-driven blueprint meta, and the prep work that actually decides whether you clear or wipe — sorted, linked, and explained without the marketing copy.
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TL;DR
- Three permanent combat modes: Umbral Monument (boss check), Crisis Drills (sustain check), Etchspace Salvage (roguelite).
- One community meta: Endgame Blueprints — stable 18+ megabases, indexed across an 8-part series.
- The bar is Tier 4 gear. Endgame is tuned around a working T4 set. Underleveled gear gets punished harder than poor play.
- Prep matters more than picks. Most "I can't clear" problems trace back to missing progression layers, not the wrong operator.
What is the Endfield endgame?
Endfield's endgame is everything you do after the story stops being the main reason to log in. Three permanent combat modes test different parts of your roster — Umbral Monument for boss execution, Crisis Drills for sustain under pressure, and Etchspace Salvage for derangement-heavy roguelite runs. In parallel, the community runs a continuous blueprint meta around stable 18+ megabases, hubbed under Endgame Blueprints.
None of the four are gated behind a single linear progression — you can do them in any order — but they reward different builds and stretch your account in different directions. This page sits above all of them and links down to the deep dives.
Built for prepped accounts. Endgame assumes you have a working Tier 4 set on at least one DPS and a comp that can survive without RNG. If you're still finishing artificing, finish that first — endgame content punishes underleveled gear harder than it punishes poor play.
What is Umbral Monument Agony Mode?
Umbral Monument is the permanent boss-rush mode and the closest Endfield has to a "score tower." Each series rotates a fresh set of boss stages with custom mechanics. Agony Mode is the harder difficulty tier where the real meta lives. Clears matter both for Monumental Etching rewards and as a public benchmark — most operator tier-list movement comes from how operators perform inside Umbral Monument.
Why it matters in three lines:
- It drives the live operator meta — clears here decide tier list positions.
- Monumental Etching is the highest-impact reward currency in the game.
- Mechanics-heavy fights reward stagger discipline more than raw DPS.
For stage-by-stage strategy and team comps, see the dedicated Umbral Monument guide. If you're chasing the Series 2 archive, Inorganic Construct Teams covers every stage-specific team build.
How does Crisis Drills work?
Crisis Drills is the wave-based combat trial — a fixed sequence of escalating encounters that you fight with a single squad and no respawns. Where Umbral Monument is a boss check, Crisis Drills is a sustain check: SP economy, AoE coverage, and operator durability all matter more than burst damage. Picking a squad that can handle the mid-wave adds is usually what separates a clear from a wipe.
Sustain over burst. Operators that look weak on an Umbral Monument tier list often shine in Crisis Drills. Bring at least one reliable battery and one AoE damage dealer — pure single-target burst squads tend to bleed HP on the trash waves.
For the prep checklist, clear order, and recommended comps see the Crisis Drills guide.
What are Etchspace Salvage routes?
Etchspace Salvage is the roguelite mode: each run pushes you through derangement-heavy zones where the modifier stack matters more than your gear. The mode has three distinct skill tiers, each documented as its own cluster guide.
| Tier | What it covers |
|---|---|
| Basics | Unlock requirements, run flow, and the first round of upgrades that change how runs feel. |
| Mastery | Advanced derangement stacking, boss tactics, inventory management, and the weekly farming layer. |
| Routes | Per-region routing — which nodes to clear first, which to skip, how to plan a run before you start it. |
Read the routes guide before your first serious run. Etchspace runs are easy to ruin in the first 5 minutes by picking up the wrong derangement pair. Even a rough mental map of the route beats brute-forcing the first 20+ runs.
What are endgame megabase blueprints?
Past a certain account level, AIC stops being about your next factory tier and becomes about megabases — large, often stage-18-stable layouts that lock in a high throughput for a single high-value product. The community-driven Endgame Blueprints hub indexes the working layouts, and Parts 2 through 8 break out the highest-throughput megabases in detail.
The phrase "stable 18+" is the implicit standard — a base that runs at AIC stage 18 or higher without throughput drops, brownouts, or belt jams. Anything less is still a learning project, not an endgame megabase.
If you're new to factory work, start with the Factory Guide before importing other people's megabases. Copying a blueprint without understanding power and belt constraints usually breaks the moment you swap one input.
How should I prepare for endgame?
Endgame readiness is a function of three things, in priority order: a complete operator core, a working Tier 4 gear set, and the combat mechanics fluency to actually use them. Skip any of these and you'll be brute-forcing content that's much easier with prep.
1. Finish operator progression
A capped DPS with maxed skills beats two half-built ones. The Operator Progression Guide covers the Sanity math: Level 60 vs 90, skill mastery economics, and where to stop on weapon tunes and essence etches.
2. Build a Tier 4 gear set
Endgame fights are tuned around T4 gear. The Artificing Guide hubs the gearing / essences / weapons path, and the Artificing Planner finds your cheapest Good Match fodder for each substat — ranked by base value, then by Stock Bill craft cost.
3. Drill the combat fundamentals
SP economy, stagger thresholds, and rotation timing are not optional at this tier. The Combat Guide covers all of it. Crisis Drills and Umbral Monument both reward operators who can sustain a clean rotation under pressure — and punish ones who can't.
Related read: if your gear is in shape but you're still hitting walls in Umbral Monument, check Inorganic Construct Teams for the Series 2 team-comp archive — stage-specific picks beat generic best-of lists in this mode.