Crows startled by Survivors within 20/28/36 meters alert you with a Loud Noise Notification.
Spies from the Shadows has a cool-down of 5 seconds between alerts.

Each time you hook a Survivor, Leverage activates and gains 1 Token, up to a maximum of 10 Tokens:

For each Token, the Altruistic and Personal Healing speeds of Survivors are reduced by a stack-able 3/4/5 percent for the next 30 seconds, up to a maximum of 30/40/50 percent.

Each time the Survivors complete repairs on a generator, Fire Up grows in power.

For each generator completed, gain a 4percent stackable buff that grants a speed bonus to picking up, dropping, vaulting, damaging generators, and breaking pallets and breakable walls for the remainder of the trial.

Performing the Damage Generator Action on a Generator activates Trail of Torment:

Grants the Undetectable Status Effect until the Generator stops regressing or a Survivor is damaged by any means.
The Aura of the damaged Generator is revealed to all Survivors in yellow.
Trail of Torment has a cool-down of 80/70/60