Casualties Unknown Entities & Bosses Index
Comprehensive catalog of subterranean entities, predatory cave fauna, Elder Thornback boss encounters, and hazard countermeasures.
Master Subterranean Entities & Bosses Index
Complete catalog of predatory subterranean fauna, biological hive creatures, and apex boss entities in Casualties: Unknown.
| Entity / Predator Name | Threat Tier | Primary Spawning Depths | Primary Attacks & Vulnerability | Detailed Guide |
|---|---|---|---|---|
| Elder Thornback | Class V Apex | Layer 11 Core Vaults | 2,400 HP; Chitin Armor; Weak to Gunsaw shredding | Boss Guide → |
| Cave Ticks & Queens | Class I Swarm | Layer 1–3 Gravel & Desert | Wall-climbing drops; rapid bleed; weak to torches | Fauna Guide → |
| Cliff Striders | Class II Ambush | Layer 2 Craggy Crevices | Knockback leap; pulls players into vertical drops | Layers Guide → |
| Thermal Sentry Turrets | Class III Automated | Layer 3 Dried Desert | Infrared tracking; 9mm burst; weak to smoke | Turret Guide → |
| Species Unknown (Expies) | Playable Organism | All Subterranean Layers | SAW-01 Experiment, SAW-02 Dune, SAW-03 Milky | Species Guide → |