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.

Survivors you unhook benefit from the following effects:

Extends the duration of their Endurance Status Effect by 6/8/10 seconds.
Extends the duration of their Haste Status Effect by 10 seconds.

Each time a Survivor other than yourself is killed or sacrificed, Sole Survivor gains 1 Token, up to a maximum of 3 Tokens:

Each Token grants a stack-able radius of 20/22/24 metres within which the Killer is unable to read your Aura, up to a maximum of 60/66/72 metres.
Once you are the last Survivor standing, you benefit from the following effects:

Increases your Repair speed of Generators by +75 percent.
Increases your Opening speed of the Exit Gates and the Hatch by +50 percent.
Increases the odds of becoming the Killers initial Obsession by +100 percent.

The Killer can only be obsessed with Survivor at a time.

Unlocks potential in your Aura-reading ability.
Once all Generators are completed, Wake Up! activates:

The Auras of the Exit Gate Switches are revealed to you within 128 metres.
When opening an Exit Gate, your Aura is revealed to all other Survivors within 128 metres.
You open Exit Gates 15/20/25 percent faster.