Each time you are unhooked or unhook yourself, the Hook breaks and the Killer's Aura is revealed to you for 4/5/6 seconds.
A Hook broken by Breakdown takes 180 seconds to respawn.

You suffer from the Broken Status Effect for the entire Trial, but benefit from the following effects:

Pools of Blood are suppressed.
When injured or dying, Grunts of Pain are reduced by 25/50/75 percent.
Your Recovery speed is increased by 15/20/25 percent.
You can recover fully from the Dying State.

Reduces the volume of Grunts of Pain while in the Injured State by 25/50/75 percent.
Iron Will cannot be used when suffering from Exhaustion, but does not cause the Exhausted Status Effect.

Prevents Crows from being alerted by your proximity and flying off, unless they are being stepped on.
Suppresses the urge to scream from any cause at all times.
Suppresses all noises related to unlocking Chests, and cleansing or blessing Totems.
Reduces their Interaction speed by 40/35/30 percent.