Damage Resistance

Damage Resistance refers to the Bullet, Melee, and Spirit Resist statistics which reduce incoming damage taken. Bullet Resist reduces all weapon and melee damage, Melee Resist reduces only melee damage, while Spirit Resist reduces all spirit damage.

Most resistances stack diminishingly with each additional resistance source having reduced effect. Resistance Reduction is applied to the final resistance, and if stacked separately and diminishingly.

The Bullet Resistance and Spirit Resistance stats are also sometimes referred to as "Bullet Armor" and "Spirit Armor".

Melee Resist

Melee Resist is a special case of Bullet Resist that is stacked diminishingly along with Bullet Resist to reduce all incoming melee damage. This includes all "melee" abilities such as Viscous Puddle Punch ability.

Math

Despite being presented in-game as +x% Bullet, Melee, or Spirit Resist, multiple sources of resist stack multiplicatively, not additively.

The formula for resist is: $BR_{f}=\left\lceil 1-\prod _{i=1}^{n}(1-BR_{i})\right\rceil$
where:
${\begin{aligned}BR_{f}&={\text{final bullet resist,}}\\n&={\text{number of bullet resist sources,}}\\BR_{n}&={\text{bullet resist value}}\\\end{aligned}}$

For example, multiple sources of Bullet Resist:

• 60% Bullet Resist from Viscous' Goo Ball
• 40% Bullet Resist from the Colossus Item results in:

$1-(1-0.6)*(1-0.4)=76\%{\text{ Bullet Resist}}$

Resistance Reduction

Resistance Reduction refers to any negative amount of Resist, making the target take increased damage.

Resistance Reduction is calculated multiplicatively like resistance, but then simply subtracted from the resistance amount.

${\mathit {DisplayedResist}}=[1-(1-{\mathit {Resistance1}})*(1-{\mathit {Resistance2}})*...*(1-{\mathit {ResistanceN}})]-[1-(1-{\mathit {ResReduct.1}})*(1-{\mathit {ResReduct.2}})*...*(1-{\mathit {ResReduct.N}})]$

For example, using Bullet Resists and Reductions:

• 70% Spirit Resist from Viscous' Goo Ball
• 20% Spirit Resist from Spirit Armor
• -12% Spirit Resist from Spirit Strike
• -12% Spirit Resist from Mystic Vulnerability
• -24% Spirit Resist from Crippling Headshot

$[1-(1-0.7)*(1-0.2)]-[1-(1-0.12)*(1-0.12)*(1-0.24)]={\mathit {3}}5\%SpiritResist$

The final Resistance can go negative, and this multiplies the damage taken of that type. For example:

• 30% resist= 70% of the damage from the weapon or ability.
• 0% resist = 100% of the damage from the weapon or ability.
• -30% resist = 130% of the damage from the weapon or ability.

Items like Headshot Booster grant a flat added bullet damage, this bonus damage is not multiplied by weapon damage but is subject to resistance reduction/increase in damage.

Even Resistance from Level#Power Increases is multiplicative. For example, Bebop's base Resistance is 0%, while he gains 1.25% Resist per Power Increase. After 14 Power Increases, Bebop's total resistance will be $0.1+1-(1-0.0125)^{14}=26.2\%$

Graphs

This page is under construction. To avoid edit conflicts, please consult the edit history and the talk page.

Include graph of effective health as a function of Damage Reduction. In the mean time, feel free to refer to this Desmos graph.

Include graph of effective damage increase from using 15%, 30%, and 45% Resistance Reduction as a function of the target's original Damage Reduction. In the mean time, feel free to refer to this Desmos graph.

Sources of Damage Resistance

Bullet Resist

List of items

Name	Cost	Category	Stat change
Close Quarters	500	Weapon	+5% Bullet Resist
Berserker	1,250	Weapon	+9% Bullet Resist
Swift Striker	1,250	Weapon	-5% Bullet Resist
Escalating Resilience	3,000	Weapon	+2% Bullet Resist
Warp Stone	3,000	Weapon	+30% Bullet Resist
Point Blank	3,500	Weapon	+15% Bullet Resist
Melee Lifesteal	500	Vitality	+3% Bullet Resist
Bullet Armor	1,250	Vitality	+26% Bullet Resist
Return Fire	1,750	Vitality	+20% Bullet Resist
Lifestrike	3,500	Vitality	+10% Bullet Resist
Improved Bullet Armor	4,250	Vitality	+50% Bullet Resist
Colossus	6,200	Vitality	+40% Bullet Resist
Siphon Bullets	6,200	Vitality	+18% Bullet Resist
Unstoppable	6,200	Vitality	+15% Bullet Resist
Mystic Reach	500	Spirit	+7% Bullet Resist
Improved Reach	3,500	Spirit	+13% Bullet Resist
Echo Shard	6,200	Spirit	+16% Bullet Resist
Refresher	6,200	Spirit	+16% Bullet Resist

• Monster Rounds increases Bullet Resist vs. NPCs by +30%.
• Escalating Resilience increases Bullet Resist by 2% per stack per shot when hitting enemy heroes, maxing at 40% Bullet Resist.

Bullet Resist Reduction

List of items

Name	Cost	Category	Stat change
Hunter's Aura	3,000	Weapon	-9% Bullet Resist Reduction
Crippling Headshot	6,200	Weapon	+24% Bullet Resist Reduction
Bullet Resist Shredder	1,250	Spirit	-12% Bullet Resist Reduction
Withering Whip	1,250	Spirit	-11% Bullet Resist Reduction

Melee Resist

List of items

Name	Cost	Category	Stat change
Titanic Magazine	3,500	Weapon	+25% Melee Resist
Restorative Locket	1,250	Vitality	+25% Melee Resist
Bullet Resist Shredder	1,250	Spirit	+15% Melee Resist
Torment Pulse	3,000	Spirit	+15% Melee Resist

Spirit Resist

List of items

Name	Cost	Category	Stat change
Pristine Emblem	3,500	Weapon	+12% Spirit Resist
Titanic Magazine	3,500	Weapon	+12% Spirit Resist
Silencer	6,200	Weapon	+15% Spirit Resist
Healing Booster	1,250	Vitality	+6% Spirit Resist
Restorative Locket	1,250	Vitality	+10% Spirit Resist
Spirit Armor	1,250	Vitality	+22% Spirit Resist
Majestic Leap	3,000	Vitality	+6% Spirit Resist
Improved Spirit Armor	4,250	Vitality	+45% Spirit Resist
Colossus	6,200	Vitality	+40% Spirit Resist
Phantom Strike	6,200	Vitality	+15% Spirit Resist
Cold Front	1,250	Spirit	+10% Spirit Resist
Mystic Vulnerability	1,250	Spirit	+6% Spirit Resist
Ethereal Shift	3,000	Spirit	+40% Spirit Resist
Spirit Snatch	3,500	Spirit	+8% Spirit Resist
Mystic Reverb	6,200	Spirit	+14% Spirit Resist
Refresher	6,200	Spirit	+8% Spirit Resist
Escalating Exposure	7,450	Spirit	+15% Spirit Resist

Spirit Resist Reduction

List of items

Name	Cost	Category	Stat change
Crippling Headshot	6,200	Weapon	+24% Spirit Resist Reduction
Spirit Strike	500	Spirit	-12% Spirit Resist Reduction
Mystic Vulnerability	1,250	Spirit	-12% Spirit Resist Reduction
Spirit Snatch	3,500	Spirit	-12% Spirit Resist Reduction
Escalating Exposure	7,450	Spirit	-12% Spirit Resist Reduction