Once you are one Hook away from instant death, Blood Rush activates:

Press the Active Ability button to lose a Health State and instantly recover from the Exhausted Status Effect.
Causes the Broken Status Effect for 28/24/20 seconds, while you are automatically healing back to Healthy.
Cancels the healing effect upon taking damage.
Blood Rush is disabled for the remainder of the Trial after use.

While repairing a Generator, its Aura is revealed in yellow to all other Survivors located within 32 metres.
If the Killer downs a Survivor while you are repairing a Generator, you see the Auras of all other Survivors for 8/9/10 seconds.

When you unhook a Survivor, the rescued Survivor benefits from the following effects for 4/6/8 seconds:

Scratch Marks and Pools of Blood are suppressed.
Additional 7 percent Haste Status Effect, boosting their Movement speed.
Guardian reveals the Killers Aura to you for 8 seconds.

Every 15 seconds you are within the Killers Terror Radius, while not being chased, Stake Out gains 1 Token, up to a maximum of 2/3/4 Tokens.

When Stake Out has at least 1 Token, Good Skill Checks consume 1 Token and are considered Great Skill Checks, granting an additional Progression bonus of 1 percent.
Great Skill Checks do not consume any Tokens.

After a successful Killer Blind, the Killer suffers from the Blindness Status Effect for 20/25/30 seconds.
Residual Manifest grants the ability to rummage through an opened Chest once per Trial and will guarantee a basic Flashlight.

Unlocks potential in your Aura-reading ability.
You see the Aura of the last 1/2/3 Survivor(s):

You have rescued from a Hook, or who have rescued you from a Hook.
You have completed a Healing action on, or who have completed a Healing action on you.
They also see your Aura.
All effects of Aftercare are reset upon being hooked by the Killer.