This article pertains to a subject that is not yet released in the Global server of Arknights.

“	Increase base stats based on lost HP. Reaches maximum boosted stats when HP is below a certain percentage (only the strongest effect of this type applies for each stat).	”
	—In-game tip (unofficial translation)

Tenacity is a buff in Arknights, introduced alongside Episode 12; before this, it was a feature exclusive to Musha Guards.

Overview

Only Operators who have Tenacity, which increases their own attributes that scales on the Operator's missing HP; the lower their HP, the higher the attribute increase, which reaches the highest possible once the Operator's HP falls below a certain percentage of their maximum HP.

Multiple instances of Tenacity are mutually exclusive on a given attribute; the highest effect takes precedence over the others.

Sources

Operator	Skill/talent	HP threshold	Max. value
Akafuyu	Nobukage-ryu - Hatobu	Base: 50% E1: 40% E2: 30%	Base: 50 ASPD E1: 75 ASPD E2: 100 ASPD
Hellagur	Waxing Moon	Base/MUS-X Stage 3: 50% E1/MUS-X Stage 2: 40% E2: 30%	Base: 50 ASPD E1: 75 ASPD E2: 100 ASPD MUS-X Stage 2: 120 ASPD MUS-X Stage 3: 130 ASPD
Morgan	Excited Pioneer	30%	E1: 40% ATK E2: 50% ATK DRE-X Stage 2: 55% ATK DRE-X Stage 3: 58% ATK P5: +2% ATK
Rathalos S Noir Corne	Tenacious	Base: 50% E1: 40% E2: 30%	Base: 30 ASPD and 30% DEF E1: 40 ASPD and 40% DEF E2: 50 ASPD and 50% DEF
Utage	Serious Mode		Base: 50 ASPD E1: 75 ASPD E2: 100 ASPD