Each time you are unhooked or unhook yourself, the Hook breaks and the Killer's Aura is revealed to you for 4/5/6 seconds.
A Hook broken by Breakdown takes 180 seconds to respawn.

Unlocks potential in your Aura-reading ability:
While you are hooked:

The Auras of all Survivors are revealed to one another.
Whenever the Killer is within 8/12/16 metres of your Hook, their Aura is revealed to all Survivors.
While any other Survivor is hooked:

The Auras of all other Survivors are revealed to you.
Whenever the Killer is within 8/12/16 metres of the hooked Survivor, their Aura is revealed to you.

Whenever another Survivor is hooked, Fast Track gains 1/2/3 Tokens, up to a maximum of 9/18/27 Tokens.

You consume all accumulated Tokens after a Great Skill Check on a Generator.
Each Token grants a stack-able 1 percent Progression bonus in addition to the default Progression bonus for succeeding a Great Skill Check.

You start the trial with 3 Tokens.
Whenever the Killer attempts to read your Aura, Distortion activates and 1 Token is consumed:

Your Aura will not be shown to the Killer and you will not leave any Scratch Marks for the next 6/8/10 seconds.
Every 30 seconds you are within the Killer's Terror Radius, Distortion gains back 1 Token.

Distortion does not activate when you are in the Dying State.

Distortion cannot accumulate more Tokens than its initial count.

Failing a Skill Check while repairing:

Prevents the Generator Explosion.
Applies the default Regression penalty.
Applies an additional Regression penalty of 5/4/3 percent.
Technician reduces the audible range of your Generator-repairing noises by 8 metres.

After a Generator is completed, you will not leave any Scratch Marks for the next 6/8/10 seconds.