Fan-made · Unofficial
What is wrong with your subject right now?
Casualties: Unknown Wiki gives fast, dated answers for bleeding, infection, fibrillation and descent prep, built for players mid-run. Every page lists the game version and when its sources were checked.
11 layers deep
Symptom triage
Pick the symptom you are dealing with, or search the wiki
- Bleeding Stop blood loss first Critical
- Fibrillation Cardiac emergencies and the defibrillator High
- Infection Spot it and treat it Moderate
- Broken bones Splints and recovery Moderate
- Triage order Which injury to treat first Low
Start Here
Your first descent
Guides · sources listed on every page
Medical triage
Match a symptom to a treatment: bleeding, infection, fibrillation and broken bones.
Open
Beginner guide
Controls, early priorities and the habits that keep your subject alive on the first layers.
All 11 layers
From Gravel Lands to Crimson Ascent: how deep the descent goes and what each depth demands.
Crafting recipes
The survival-first recipes worth crafting before anything else, and the intelligence they need.
The descent
Eleven layers, in order
Names and order only, from the Steam page and community layer lists. In-game depth readouts are not tied to layer numbers.
- 01 Gravel Lands Guide
- 02 Deeper Gravel Lands Guide
- 03 Dried Desert In progress
- 04 Wasteland In progress
- 05 Overgrown Depths In progress
- 06 Frozen Chasm In progress
- 07 Fungal Pools In progress
- 08 Crystalline Hollow In progress
- 09 Geothermal Vents In progress
- 10 Where We Must Reach In progress
- 11 Crimson Ascent In progress
Recent Updates
Browse all Guides
Casualties: Unknown Beginner Guide — Walkthrough & Controls
First-run priorities for Casualties: Unknown: tutorial, survival order, default controls from in-game training, and common mistakes to avoid.
Updated 11/10/2026
Guides
Casualties: Unknown Console Commands & Cheats Guide
Updated 11/10/2026
Guides
All Endings in Casualties: Unknown — Bio-pod, Escape, Mercenary
Updated 11/10/2026
Guides
Casualties: Unknown FAQ — Codes, Price, Demo & Multiplayer
Updated 11/10/2026
Guides
How Many Layers Are in Casualties: Unknown?
Updated 11/10/2026
Frequently Asked Questions
Quick answers to the most common questions about Casualties: Unknown.
What is Casualties: Unknown?
Does Casualties: Unknown have redeem codes?
How many layers are there in Casualties: Unknown?
How much does Casualties: Unknown cost?
Is there multiplayer in Casualties: Unknown?
Ready for the next descent?
Bookmark the medical triage page, and check the date at the top of any guide before you rely on a number.