Survival & Damage Mechanics

A bullet lands on one of 13 physical hit zones, but damage comes out of seven larger health pools. Keeping those two layers separate makes injuries, fatal hits and medical choices much easier to read.

This guide covers the survival decisions. The Damage Model owns the shot arithmetic, and the Armour Penetration guide covers protection and wear.

Thirteen zones feed seven HP pools

The collision model has one head zone, four torso zones, four arm zones and four leg zones. Each zone maps to exactly one of the pools below.

Collision zones

The physical capsules a round can hit. Hands, feet and the neck do not have separate capsules.

Health pools

The shared bars those zones drain. Together they start at 440 HP.

Head

1 zone feed this pool

Fatal at zero

Upper chest

2 zones feed this pool

Fatal at zero

Lower chest

2 zones feed this pool

Not directly fatal at zero

Left arm

2 zones feed this pool

Not directly fatal at zero

Right arm

2 zones feed this pool

Not directly fatal at zero

Left leg

2 zones feed this pool

Not directly fatal at zero

Right leg

2 zones feed this pool

Not directly fatal at zero

What happens when a pool reaches zero

Head or upper chest at zero kills. A destroyed lower chest, arm or leg does not kill by itself. Any damage that overflows that exhausted pool drains all seven current pools proportionally; repeated hits on the same destroyed limb therefore keep hurting the rest of the body.

The exact hit count is never universal. Round, range, build firing power, landed zone, armour coverage and armour condition can all change it.

How to read the simulator

For head and upper-chest shots, the simulator uses that vital pool’s real HP. For every non-vital zone, it subtracts damage from one pooled 440 HP budget instead. It does not reproduce the game’s seven-pool overflow redistribution or its final sub-0.5 HP snap, so a limb result is a damage-budget estimate rather than an exact destroyed-limb simulation.

Build a scenario in Combat Sim

Bleeding and Deep Wound

Shots can cause Bleeding, and every round publishes its own Bleeding Chance value. Deep Wound is the more demanding status: while untreated, it continues to drain health and hydration.

Bleeding

Treat it with Gauze or either advanced bandage. A round’s catalogue entry shows its Bleeding Chance; the exact runtime formula and damage rate are not verified, so this guide does not invent either.

Compare ammunition

Deep Wound

Treat it with an advanced Bandage, Military Bandage or H.C. stimulant. Gauze does not treat Deep Wound. No verified per-second rate or stacking rule is published here.

Browse bandages

Choose treatment by status

Item name matters more than rarity shorthand. Match the status shown in game to a medical item whose current description treats it.

Bleeding only

Gauze treats Bleeding, but not Deep Wound.

Either wound

Bandage and Military Bandage treat both Bleeding and Deep Wound. The H.C. stimulant also describes healing and preventing both.

Destroyed limb

Suturing instruments restore damaged limbs. Their tiers differ, but the exact post-use HP behavior is not stated here because the runtime treatment path remains unverified.

Pain

Painkillers temporarily suppress pain and consume energy and hydration. Their item pages carry the current doses, duration and side-effect data.

Browse all medical items

Hydration and energy

Both meters drain during a raid, and the game ties staying hydrated and fueled to stamina. Provisions restore energy, hydration or a mix of both; painkillers consume some of each, and Deep Wound adds hydration loss while it remains untreated.

This guide does not attach invented thresholds or debuffs to a low or empty meter. Read each provision’s current split before choosing what to carry.

Browse provisions

Make the next safe decision

There is no universal medication order. The useful sequence changes with the status, remaining HP, cover and whether another fight is already on you.

1
Get behind cover
Treatment animations cost time and attention.
2
Read the status
Bleeding, Deep Wound, a destroyed limb and pain need different items.
3
Match the item
Use the current medical description instead of rarity as shorthand.
4
Recheck the raid
Review HP, hydration and energy before moving or fighting again.

Learn the simulator workflow Read the exact damage path

Limb targeting is a scenario choice, not a four-shot rule. If the selected armour leaves a limb open, compare that zone against the protected torso at the range and durability you expect, then treat the simulator’s non-vital result as the pooled estimate described above.

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What happens when a pool reaches zero

The exact hit count is never universal. Round, range, build firing power, landed zone, armour coverage and armour condition can all change it.

Hydration and energy

This guide does not attach invented thresholds or debuffs to a low or empty meter. Read each provision’s current split before choosing what to carry.

Browse provisions

Thirteen zones feed seven HP pools

Collision zones

Health pools

Head

Upper chest

Lower chest

Left arm

Right arm

Left leg

Right leg

What happens when a pool reaches zero

How to read the simulator

Bleeding and Deep Wound

Bleeding

Deep Wound

Choose treatment by status

Bleeding only

Either wound

Destroyed limb

Pain

Hydration and energy

Make the next safe decision

Get behind cover

Read the status

Match the item

Recheck the raid

Related Guides

The Damage Model, Step by Step

How to Use Combat Sim

When is the Next Wipe?

Thirteen zones feed seven HP pools

Collision zones

Health pools

Head

Upper chest

Lower chest

Left arm

Right arm

Left leg

Right leg

What happens when a pool reaches zero

How to read the simulator

Bleeding and Deep Wound

Bleeding

Deep Wound

Choose treatment by status

Bleeding only

Either wound

Destroyed limb

Pain

Hydration and energy

Make the next safe decision

Get behind cover

Read the status

Match the item

Recheck the raid