While standing in a Locker for 3 seconds, Head On activates:

When performing a rushed action to leave a Locker, stun the Killer for 3 seconds if they are within range.
Head On causes the Exhausted Status Effect for 60/50/40 seconds.

Head On cannot be used when Exhausted or when you have accrued Idle Crows.

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.

When injured, healing another Survivor without using a Med-Kit also heals you with a Conversion rate of 40/45/50 percent.

After performing a rushed vault, break into a sprint of 150 percent of your normal Running Movement speed for a maximum of 3 seconds.
Lithe causes the Exhausted Status Effect for 60/50/40 seconds.
Lithe cannot be used when Exhausted.

When starting to run, break into a sprint at 150 percent of your normal Running Movement speed for 3 seconds.
Sprint Burst causes the Exhausted Status Effect for 60/50/40 seconds.
Sprint Burst cannot be used when Exhausted.

Whenever another Survivor is hit with a Basic Attack or Special Attack within 16 metres of you, Self-Preservation activates:

Scratch Marks, Grunts of Pain when injured, and Bleeding are suppressed for the next 6/8/10 seconds.