For each Survivor you hook for the first time, No Way Out gains 1 Token.
Once the Exit Gates have been powered, No Way Out activates:

When a Survivor interacts with an Exit Gate Switch, you receive a Loud Noise Notification and The Entity blocks both Exit Gate Switches for 12 seconds and an additional 6/9/12 seconds per Token in your possession, up to a combined maximum of 36/48/60 seconds.

3 seconds after injuring a Survivor by any means, Dissolution activates for 20 seconds.  While Dissolution is active, if a Survivor fast vaults over a pallet inside of your Terror Radius, The Entity will break the pallet at the end of the vault, and Dissolution deactivates.

Injuring a Survivor will call upon The Entity to block pallets from being pulled down within a 32 meter radius of the Survivor location for 15 seconds.

The Hex effects persist as long as the related Hex Totem is standing.

Each time a Survivor is hooked for the first time, you gain a token.  Upon reaching 4 tokens Grim Embrace activates.

The Entity blocks all generators for 40 seconds.  The Obsessions aura is revealed to you for 5 seconds.

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.

The Auras of Survivors, who are healing or being healed, are revealed to you when they are within a range of 20/24/28 meters.