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.

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.

When you heal another Survivor for the equivalent of 1 Health State, Renewal activates:
The next time you are unhooked or unhook yourself, you suffer from the Broken Status Effect until Renewal deactivates.
You are automatically healed 1 Health State after 28/24/20 seconds.
While Renewal is active, the following conditions will deactivate it:

Successfully being healed by Renewal.
Being put into the Dying State before the timer elapses.
Renewal does not activate if you already suffer from the Broken Status Effect.

After cleansing a Totem, Overzealous activates:

Increases your Repair speed by 6/7/8 percent if it was a Dull Totem.
Increases your Repair speed by 12/14/16 percent if it was a Hex Totem.
Overzealous deactivates when losing a Health State by any means.