You can see the Scratch Marks of other Survivors.
Whenever another Survivor loses a Health State within 32 metres of you, the Killers Aura is revealed to you for 3/4/5 seconds.

Each time a Survivor other than yourself is killed or sacrificed, Sole Survivor gains 1 Token, up to a maximum of 3 Tokens:

Each Token grants a stack-able radius of 20/22/24 metres within which the Killer is unable to read your Aura, up to a maximum of 60/66/72 metres.
Once you are the last Survivor standing, you benefit from the following effects:

Increases your Repair speed of Generators by +75 percent.
Increases your Opening speed of the Exit Gates and the Hatch by +50 percent.
Increases the odds of becoming the Killers initial Obsession by +100 percent.

The Killer can only be obsessed with Survivor at a time.

After repairing a Generator for at least 3 seconds, its Aura is highlighted to you in yellow.

The Generator stays highlighted until it is either fully repaired, you start repairing another Generator, or enter a Locker.
Entering a Locker will trigger a Loud Noise Notification for the Killer at the highlighted Generators location.
Red Herring has a cool-down of 60/50/40 seconds.

Press and hold the Active Ability button for 6/5/4 seconds while standing beside a dropped Pallet to reset it to its upright position.

Grants the ability to see the Auras of all dropped but not yet destroyed Pallets in the environment.