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.

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.

When you or the Obsession are injured, you both see each other's Auras.

After healing the Obsession or being healed by the Obsession, you both gain the Haste Status Effect, moving at an increased speed of 5/6/7 percent until you are no longer within 16 metres of each other.
If you are the Obsession, Blood Pact deactivates.
Lowers the odds of becoming the Killer's initial Obsession by -100 percent.

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

Whenever you become injured, you retain the Movement Speed burst for 2 additional seconds.
Overcome causes the Exhausted Status Effect for 60/50/40 seconds.
Overcome cannot be used when Exhausted.