CASUALTIES: UNKNOWN
BUILD 1.0.1

Enemies and traps

Compare creatures by the layers where the community table lists them, then use the detailed threat table for behavior, cues and responses. Turrets and sound cannons are stationary traps; the Elder thornback is the layer-five boss.

Creature distribution by layer

Creature entries in the eleven-layer reference
CreatureLayersBehavior scopeStatus
Shade crawler1, 2, 3, 5, 6, 7See layer context; no separate numerical behavior claim supplied here.1 source · community wiki
Cave tick2, 5, 7See layer context; no separate numerical behavior claim supplied here.1 source · community wiki
Sand stalker3, 5See layer context; no separate numerical behavior claim supplied here.1 source · community wiki
Overgrown tick5, 7See layer context; no separate numerical behavior claim supplied here.1 source · community wiki
Tentacle-plant5See layer context; no separate numerical behavior claim supplied here.1 source · community wiki
Thornback5See layer context; no separate numerical behavior claim supplied here.1 source · community wiki
Elder thornback5See layer context; no separate numerical behavior claim supplied here.1 source · community wiki
Snow strider6See layer context; no separate numerical behavior claim supplied here.1 source · community wiki
Grabber-shroom7See layer context; no separate numerical behavior claim supplied here.1 source · community wiki
Manifestation8See layer context; no separate numerical behavior claim supplied here.1 source · community wiki
Laser Drone9See layer context; no separate numerical behavior claim supplied here.1 source · community wiki
Cryo Drone9See layer context; no separate numerical behavior claim supplied here.1 source · community wiki

Stationary threats and the Elder thornback

Detailed threat comparison · checked 12 Nov 2026
ThreatLayersBehaviorCueDamage type / effectsResponseDropsStatus
Sound CannonWasteland (layer 4), Where We Must Reach (layer 10)Charges for 5 s while tracking the player, then fires a sonic blast if line of sight is clearDistinct rumbling while charging−2 mood, +60 hearing loss, −5 brain health, −69 consciousness, severe internal bleeding, −20 to −30 muscle per limbBreak line of sight. A blast has no effect when exactly one of cannon/player is submerged; both submerged strengthens it. A blocked blast still lowers consciousness.Scrap metal: guaranteed first, 80% second, 40% third (20–100% condition); 50% circuit board (10–100% condition)1 source · community wiki
Elder ThornbackOvergrown Depths (layer 5) only, 3 spawn per layerThree spawn in Overgrown Depths. Initial pursuit; retreat below 3750 HP; berserk pursuit below 2500 HP. Can tunnel through obstacles.Sense of impending doom; closer HORRIFIED / RUN FOR YOUR LIFE, retreat FOCUSED / CHASE IT DOWN.Can dismember an eligible limb; fallback head/disfigurement or thorax effects depend on remaining limbs and settings. Severe pain and bleeding.Escape through a known route; damage stuns are extremely brief. After a bite, impact damage can reset its temporary retreat.7 category drops (Drug/Medical/Tool/Utility), Big flesh chunk ×4, Blood sac ×6, Internal organs, Stiff carcass ×3, Large carcass ×21 source · community wiki
TurretDried Desert (layer 3), Wasteland (layer 4), Where We Must Reach (layer 10)Wall-mounted thermal sensor; beeps and fires 0.5 s after the player crosses its line (1 s if off-screen); reloads for 15 sLoud beep before firing; reload sound when ready+80 to 100 pain, −70 to 100 muscle and skin, +0.45 to 0.6 L/m bleeding, 30% fracture; head hits cause brain damage and eye lossAvoid the horizontal thermal firing line; use cover. Below 350 HP, explodes after 2 seconds in a 9-tile radius and may still shoot beforehand.Scrap metal ×3; Circuit board (1–100% condition)1 source · community wiki

The distribution table follows the named creatures in the current Layers article. It keeps stationary traps in the separate comparison because a firing line and a pursuing creature require different responses. More enemy damage values should be added only when an individual source supplies them.

Steam store screenshot 1 of Casualties: Unknown
Steam store screenshot 4 of Casualties: Unknown

Questions

Where is the elder thornback?

Layer 5, Overgrown Depths, also called the jungle in the wiki.

Sources