Performing the Damage Generator Action on a Generator activates Oppression:

Causes up to 3 additional Generators to also start regressing.
Triggers a difficult Skill Check on all Survivors currently repairing one of those Generators.
Oppression has a cool-down of 120/100/80 seconds.

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

Fresh blood marks are considerably more discernible than normal and can be tracked for 4 seconds longer than normal.

After damaging a generator, for the next 30 seconds, the first Survivor that interacts with it will scream, revealing their location for 4 seconds, and becoming afflicted with the Exposed status effect for 60 seconds.

Dragons Grip has a cooldown of 80 seconds.

Exposed Survivors will be downed by basic attacks even if uninjured.

If there is at least one Dull Totem remaining in the Trial Grounds, Hex: Plaything activates on a random Totem each time a Survivor is hooked for the first time:

The hooked Survivor suffers from the Cursed and Oblivious Status Effects until Hex: Plaything is cleansed.
For the first 90 seconds, only the Cursed Survivor is able to cleanse the Hex Totem.
The Aura of Hex: Playthings Hex Totem is revealed to the Cursed Survivor within 24/20/16 meters.
The Hex effects persist until its Hex Totem is cleansed.

3 generators located furthest from you are blocked by The Entity for 120 seconds at the start of the trial.  Survivors cannot repair these generators for the duration.  Affected generators are highlighted by a white aura.