After hooking a Survivor, Pop Goes the Weasel activates for the next 35/40/45 seconds:

Performing the Damage Generator Action on a Generator instantly regresses it by -20 percent of its current Progression, after which normal Regression applies.

Survivors cleansing or blessing any Totem suffer from the Oblivious Status Effect for 35/40/45 seconds.
After cleansing or blessing a Hex Totem, the Auras of all Survivors are revealed to you for 15 seconds.
The Hex effects persist until its Hex Totem is cleansed.

Whenever a Survivor performs a Healing action while they are inside your Terror Radius, that Survivor suffers from the Blindness and Exhausted Status Effects
These effects linger for 6/8/10 seconds after the Healing action is interrupted by any means.

After a Survivor loses a health state, Gearhead activates.

While Gearhead is active, the next time a Survivor completes a Great Skill Check while repairing, the perk deactivates and their aura is revealed to you for 10 seconds.

The Auras of Breakable Walls, Pallets, and Windows are revealed to you within 24/28/32 meters.

Performing the Damage Generator Action on a Generator triggers Nowhere to Hide:

The Auras of all Survivors within 24 meters of your position are revealed to you for 3/4/5 seconds.