Armor

For a complete list of armor items, see Category:Armor.

Properties

Combat Stats C showing damage resistances, thresholds and modifiers of a character with Conditioning feat and simple Rathound Leather Armor.

Damage resistance and threshold

Armor in Underrail reduces damage via one of two mechanics, percentage-based damage resistance or flat damage threshold (DR% / DT). When you take damage, your armor will either reduce it by the amount specified by the damage resistance or by the flat amount specified by the threshold, whichever is greater, not both.[1] Thus, higher DT is better against faster attacks that deal less damage (such as SMGs, knife attacks, etc), while higher DR% is better against heavy attacks (snipers, sledgehammers, etc). Since version 0.1.14.2, player's Mechanical resistance is capped at 95%.

Some armors are specialized against certain attack types and their resistances and/or thresholds are increased against those. (e.g. Mechanical damage threshold of Tactical Vests is increased by 200% against bullets.)

Damage modifier

Damage taken will also be reduced (or increased) by the damage modifier percentage. It is counted after any DR% / DT provided by armor, so it stacks multiplicatively with armor resistances and works against armor-piercing attacks. Some armors provide small amounts of damage reduction in addition to their DR% / DT. Many items, consumables and feats also provide damage reduction. Certain effects increase the damage modifier and thus increase damage taken.

Damage modifier sources
Source	Damage modifier	Damage/attack type(s)	Type	Notes
Evasion	-0% to -85%	Area of effect attacks	Skill
Stuntman ^E	-20%	Area of effect attacks	Feat	additive to evasion, still capped at -85%
Tempered: Cold ^E	-30%	Cold	Feat
Tempered: Heat ^E	-30%	Heat	Feat
Tempered: Acid ^E	-30%	Acid	Feat
Tempered: Electricity ^E	-30%	Electricity	Feat
Conditioning	-10% to -25%	Mechanical, Heat, Cold	Feat
Conditioning	-5%	Mechanical, Heat, Cold	Specialization
Heavy Metal ^HD	-7% to -20%	Mechanical	Feat
Heavy Metal ^HD	Varies	Mechanical	Specialization
Stoicism	-0% to -24%	All	Feat	1% per 4% health missing
Stoicism	-0% to -12%	All	Specialization
Beyond Cold	-15% and -40%	Mechanical and Cold	Feat	activated when Chilled or Frozen
Blast Balaclava	Varies	Explosions	Headwear
Ancient Rathound Leather Armor	-5%	Mechanical	Armor Suit
Infused Ancient Rathound Leather Armor	-5%	Mechanical	Armor Suit
Infused Ancient Rathound Leather Armor	Varies	Heat, Cold	Armor Suit
Infused Leper Serpent Leather Armor ^E	Varies	Bio	Armor Suit
Nanocomposite Plate armors	Varies	Critical Hits	Armor Suit
Blast Overcoat armors	Varies	Explosions	Armor Suit
Gray Spec Ops Armor ^E	-20%	Explosions	Armor Suit
Blast Suit	-85%	Explosions	Armor Suit
Lifting Belt	-5%	Mechanical	Belt
Bioinvestigative Belt	-10%	Bio	Belt
Chemoinvestigative Belt	-5%	Heat	Belt
Electroinvestigative Belt	-15%	Energy	Belt
Sea Serpent Slaying Sash ^E	-15%	Bio	Belt
Ancient Rathound Leather Tabi Boots	-5%	Mechanical	Footwear
Infused Ancient Rathound Leather Tabi Boots	-5%	Mechanical	Footwear
Blast Tabi Boots	Varies	Explosions	Footwear
Nervosomnifer	-60%	All	Drug
Morphine Shot	-50%	All	Drug
Aegis (medicine)	-15%	All	Drug
Irongut	-75%	Bio	Drug
Laylow	-10%	Bio	Food
Canned Mushrooms	-15%	Bio	Food
Canned Fish	-15%	Cold	Food
Canned Meat	-5%	Mechanical	Food
Canned Stew	-8%	Heat	Food
Canned Czernina ^E	-15%	Heat	Food
Cooked Burrower Egg	-35%	Poison	Food
Sea Serpent Fillet ^E	-20%	Poison	Food
Mutie Stew ^E	-35%	Acid	Food
Kzozel ^E	-10%	Mechanical	Food
Kzozel Yantar ^E	-15%	Mechanical	Food
Mushroom Brew	-10%	Mechanical	Food
Leper Poison ^E	+10% to +60%	Mechanical	Poison	Max 6 stacks, 10% per stack
Chemical Destabilization: Acid	+25% to +50%	Acid	Status effect	Max 2 stacks, 25% per stack
Chemical Destabilization: Heat	+25% to +50%	Heat	Status effect	Max 2 stacks, 25% per stack
Chemical Destabilization: Cold	+25% to +50%	Cold	Status effect	Max 2 stacks, 25% per stack
Infected Wound	+10% to +30%	All	Status effect	Max 3 stacks, 10% per stack
Infected Wound with Vile Weaponry: Damage specialization	+15% to +45%	All	Status effect	Max 3 stacks, 15% per stack
Contaminated	+10% to +200%	All	Status effect	Max 20 stacks, 10% per stack

Armor penalty

Armor penalty is an important property of all armors. It reduces your Dodge, Evasion, Stealth and Movement Points by a percentage. The heavier the armor is, the more armor penalty it has. Total armor penalty is capped at 95% for most purposes, with the exception of feats such as Nimble. Armor penalty does not reduce movement points provided by temporary bonuses, such as Sprint.

Armor penalty varies within these ranges depending on the components of the armor
Armor penalty	0%	5%	10%	15%	20%	25%	30%	45%
Armor type		Leather Armor
							Leather Armor (Serpent Skin) ^E
			Tactical Vest
						Tactical Vest with armor plate
					Riot Gear
						Riot Gear with riot shield
								Metal Armor
				Metal Helmet
	Boots

Durability

Since version 0.1.7.0, most armors and weapons have durability. You must either buy or craft repair kits that can be used to keep your equipment in working order. Once an armor's durability has been degraded enough, your UI will notify you that you have Damaged Armor and the armor will provide reduced bonuses, or no bonuses at all in case of Heavily Damaged Armor. Armor that has reached heavily damaged status or zero durability provides no bonuses, but they can still be repaired back to normal. Any equipped heavily damaged armor still provides any penalties it may have.

Requirements

Some armor list a minimal base ability requirement. Those items can be equipped even without meeting the requirement, but at a cost. For example, Metal Armors list a minimal Strength value of 8 (or 9 in case of a Tungsten Steel Armor). When equipped and not meeting this requirement at the beginning of a combat turn, then the player will get a malus to action points, up to 15.

Armor slots

The armor slots

Headwear

In addition to helmets and balaclavas, useful gadgetry like goggles can be worn on head. The craftable headwear types are Balaclava, Goggles, Psionic Headband and Metal Helmet.

Shield emitter

Shield emitters provide your character with an energy shield when powered. Energy Shield Emitters are craftable and do not suffer from limited durability, but require electrical energy.

Armor suit

The main piece of your protective armor, encompassing your character from shoulders to ankles. The craftable armor suit types are Leather Armor, Tactical Vest, Riot Gear and Metal Armor.

Belt

Belts grant extra utility slots and various other bonuses. Belts are not craftable and do not suffer from limited durability unlike most other armor pieces.

Footwear

Boots provide additional protection and can improve your movement speed and melee combat performance. The craftable footwear types are Boots and Tabi Boots.

Types

Armor in Underrail can be roughly split into three types - light, medium and heavy. These are not set-in-stone limitations, but rough examples of different playstyles. Mixing and matching different types is possible and encouraged.

Light armor

Light armors are characterized by zero or light armor penalty and bonuses stealth, movement and dodge/evasion.

Balaclava

Leather Armor

Tabi Boots

Medium armor

Medium armors are characterized by specialized bonuses and medium armor penalty that allows a mix of stealth, mobility, damage avoidance and absorption as defense.