"Survivors receive a 2/4/6 percent Regression penalty on Failed Skill Checks for Repair and Healing actions.
Hex: Huntress Lullaby grows in power each time you Hook a Survivor, gaining 1 Token, and affecting Repair and Healing Skill Checks:

1 Token: shortens the time between the Warning sound and the Skill check by -14 percent.
2 Tokens: shortens the time between the Warning sound and the Skill check by -28 percent.
3 Tokens: shortens the time between the Warning sound and the Skill check by -42 percent.
4 Tokens: shortens the time between the Warning sound and the Skill check by -56 percent.
5 Tokens: disables the Warning sound.
The Hex effects persist until its Hex Totem is cleansed."

Whenever a Generator is repaired to 90 percent, Survivors repairing it are faced with continuous Skill Checks.
If they miss one or stop repairing, the Generator becomes blocked for 16/18/20 seconds.
Merciless Storm can only trigger once per Generator per Trial.

Any Survivor repairing a generator suffers from the Blindness and Exhausted status effect.  If the Survivor is already Exhausted, their status effects timer will be paused.

Both status effects linger for 5 seconds after stopping repairs.

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.