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

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.

Whenever you are in the Injured State, Lucky Break activates:

Suppresses your Pools of Blood and Scratch Marks for a maximum of 40/50/60 seconds, after which Lucky Break deactivates.
Each 1 second spent healing another Survivor recharges Lucky Break by 1 second up to its maximum Effect duration.

Lucky Break also deactivates whenever you are Healthy or in the Dying State.

Press and hold the Active Ability button near a Dull or Hex Totem to bless it and create a Boon Totem.
Soft chimes ring out within a radius of 24 metres.

Survivors inside the Boon Totem's range benefit from the following effects:
90/95/100 percent bonus to the Recovery speed.
Unlocks the Self-Recovery ability, allowing you to fully recover from the Dying State.
You can only bless one Totem at a time.
All equipped Boon Perks are active on the same Boon Totem.

Reveals the Auras of available Pallets whenever you are in the Dying State.
While being carried by The Killer, reaching 25/20/15 percent Wiggling progression activates Power Struggle:

You can drop a nearby, standing Pallet to stun the Killer and escape their grasp.
Power Struggle deactivates after triggering successfully.

You can see the Scratch Marks of other Survivors.
Whenever another Survivor loses a Health State within 32 metres of you, the Killers Aura is revealed to you for 3/4/5 seconds.