Your ferocious tenacity in dire situations allow you to benefit from the following effects:

Increases your Crawling speed by 30/40/50 percent.
Grants the ability to crawl and recover at the same time.
Reduces the volume of Grunts of Pain while in the Dying State by -75 percent.

When healing yourself or another Survivor, Grunts of Pain and all noises related to the Healing action are suppressed:

Failed Healing Skill Checks do not trigger a Loud Noise Notification and only apply a Regression penalty of 3/2/1 percent.

When starting to run, break into a sprint at 150 percent of your normal Running Movement speed for 3 seconds.
Sprint Burst causes the Exhausted Status Effect for 60/50/40 seconds.
Sprint Burst cannot be used when Exhausted.

Whenever you are in the Injured State, Lucky Break activates:

Suppresses your Pools of Blood and Scratch Marks for a maximum of 40/50/60 seconds, after which Lucky Break deactivates.
Each 1 second spent healing another Survivor recharges Lucky Break by 1 second up to its maximum Effect duration.

Lucky Break also deactivates whenever you are Healthy or in the Dying State.

Unlocks potential in your Aura-reading ability.
When healing another Survivor from the Dying State to the Injured State, they are granted a 10 percent Haste Status Effect for 6/8/10 seconds and the Killer's Aura is revealed to the both of you for the same duration.

Your presence psychically projects itself to those in danger.
Whenever another Survivor is injured, they can see your Aura when within 32/64/96 metres of your location.
You heal other Survivors 10 percent faster.