Prosthetics Mod Guide

Losing a limb in Casualties: Unknown can feel like a run-ending disaster, but Casualties: Unknown prosthetics turn that loss into a build choice. These parts range from cheap wooden hooks to titanium limbs, eye and jaw replacements, brain mods, and powered augments. The Casualties: Unknown prosthetics system matters because ignoring it leaves mobility, defense, scanning, and even trader reputation on the table.

The first decision is not which shiny part to chase. It is what your run needs right now: a working limb, a combat edge, better scanning, or a safer repair plan.

Limb Tiers and What They Actually Do

The main Casualties: Unknown prosthetics tiers solve different problems. Wooden parts are emergency gear with real penalties. Scrap is a practical middle ground. Titanium is expensive, rare, and powerful, but it demands maintenance and protection from wetness. Eye and jaw replacements add specialized defense or utility rather than raw limb function.

A loaded battery in a prosthetic eye acts as a shield. If the eye would break while a battery is loaded, the battery is destroyed instead and the eye survives. That makes spare batteries part of eye maintenance, not just convenience.

Titanium limbs deserve special caution. Their bonuses are tied to limb HP and wetness, so a damaged arm hits softer and a wet leg slows you down more. Carry titanium sheets, and do not plan to swap titanium limbs mid-fight unless they are above 80% HP.

Augments, Brain Mods, and the Cybernetics Panel

Casualties: Unknown prosthetics become a build engine once you add augments and brain mods. Limb augments are battery-powered modifications for prosthetic limbs, or for biological limbs after using an Augment Implant Tool. Torso augments shape your long-term sustain, while brain mods add scanning, pain control, and emergency buttons.

Brain mods are their own item category and can be found in Neuromod boxes, with one to three spawning per layer. Milkies are more likely to stock a brain mod. The effects are strong enough to plan around: Pain Blocker halves incoming pain; Trap Detector marks traps and turrets with a red glow; Sonic Screamer sends nearby creatures fleeing for two seconds; Adrenaline Surge lets you stand from any ragdoll, even mid-air; Scanning Chip reveals recipes and permanently marks scanned items as recognized; Lockin Chip keeps consciousness at 100% for 30 seconds at the cost of brain damage and head HP.

You can manage each powered implant from the cybernetics panel, and the prosthetics mod's augment controls let you set hotbar keybinds by clicking a slot. For biological limbs, the Augment Implant Tool opens one socket in a shoulder or thigh through the wound view. That socket dies with the limb, so losing the arm or leg also loses the augment slot.

Repair, Wetness, and Durability Rules

Casualties: Unknown prosthetics do not behave like flesh. They ignore bleeding, infection, pain, passive healing, broken bones, venom injection, and self-harm events. Dune does not bite them, and if you have no normal limbs, Dune will not bite you even if asked. That durability is useful, but it also means medical items such as bandages, bruise kits, and LRDs do not repair them.

Welding titanium limbs is a minigame, and eye protection matters. Safety glasses, a blindfold, prosthetic eyes, having no eyes, or crafted welding goggles prevent the blinding effect. In multiplayer, welding works, but sparks can blind nearby players who lack eye protection.

Wetness penalties only begin once a prosthetic's skin is damaged. The lower the skin HP, the harsher the wetness penalty on that limb. Ripped dressings and old rags can be used on yourself to fight wetness. When skin or muscle HP reaches zero, most prosthetics break apart and drop material at your feet. Any impact that would normally break a bone destroys the prosthetic instead.

Traders, Challenge Mode, and Smart Run Choices

Casualties: Unknown prosthetics change trader reactions, so equip with the shop in mind. Expie reacts to scrap and wooden parts in opposite ways. Milky rewards high-tier cybernetics. Dune mostly ignores prosthetics but has a clear soft spot for a copper jaw.

Challenge mode starts you with wooden limbs and an empty prosthetic eye, plus 13 intelligence and a flimsy knife at your feet. That start is rough, but it teaches the repair loop early. Custom structures can contain augment boxes, neuromod boxes, and a surgical cyborg NPC who may tend wounds, repair prosthetics, or install them without pain. Their spawn chance depends on the layer and how many loops you have completed, and run settings can force spawns on specific layers or disable custom structures.

For Casualties: Unknown prosthetics runs, keep spare batteries, the correct repair material, and eye protection in your kit. Do not carry bandages for a broken titanium arm. Do not weld near unprotected multiplayer allies. If you rely on a prosthetic eye, treat every battery as a sacrificial shield. If you plan around traders, swap wooden or scrap parts before entering a store rather than after.

FAQ

Do bandages heal Casualties: Unknown prosthetics? No. Medical items such as bandages, bruise kits, and LRDs do not repair prosthetics. Use biochem or wood materials for wooden limbs, scrap materials for scrap limbs, and titanium sheets or welding tools for titanium limbs.

Can a prosthetic eye break? Yes. A prosthetic eye needs a small or medium battery to restore sight. If it would break while a battery is loaded, the battery is destroyed instead and the eye survives. Without a battery, the eye can break like a normal eye.

How do I install an augment in a biological arm or leg? Use the Augment Implant Tool in the wound view on a shoulder or thigh. It creates one augment socket in that biological limb. If the limb is later cut off, the socket is lost with it.

What is the safest early prosthetic choice? Scrap is a practical early pick because it does not bleed, get infected, or suffer broken bones. Wooden limbs are cheaper but carry real penalties, including higher damage taken, slower legs, and limited arm use.