After hitting a Great Skill Check while repairing or healing, Hyperfocus gains 1 Token, up to a maximum of 6 Tokens
For each Token, the following stack-able effects are applied:

Increases the Skill Check Trigger odds by +4 percent per Token.
Increases the Skill Check Rotation speed by +4 percent per Token.
Increases the Skill Check Bonus progression by 10/20/30 percent of its base value per Token.
Hyperfocus loses all Tokens when succeeding a Good Skill Check, failing a Skill Check, or if the action is interrupted by any means.

Unlocks potential in your Aura-reading ability:
The Auras of Survivors in the Injured State or in the Dying State within 64/96/128 metres of your location are revealed to you.
Empathy does not reveal the Aura of a Survivor being carried by the Killer.

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.

After repairing Generators for a total of 12/10/8 uninterrupted seconds, press the Active Ability button to activate Potential Energy:

Continuing to repair the Generator will charge Potential Energy instead of progressing the Generator.
Converts 1.5 percent of Repair progression into 1 Token, up to a maximum of 20 Tokens.
Missing Skill Checks results in losing some Tokens.
While Potential Energy has at least 1 Token, press the Active Ability button while repairing a Generator to instantly progress it by 1 percent per Token, consuming all remaining Tokens and deactivating Potential Energy.

Potential Energy loses all Tokens and deactivates upon losing a Health State.