You start the Trial with a Progression penalty of -25 percent for succeeding a Good Skill Check while healing another Survivor.
Succeeding a Good Skill Check while healing another Survivor grants 1 Token, up to a maximum of 3/4/5 Tokens.
Each Token grants a stack-able Progression bonus of +15 percent for succeeding a Good Skill Check while healing another Survivor.
Suppresses Great Skill Checks while healing another Survivor.
Autodidact remains inactive while healing another Survivor using a Med-Kit.

When healing yourself or another Survivor, Grunts of Pain and all noises related to the Healing action are suppressed:

Failed Healing Skill Checks do not trigger a Loud Noise Notification and only apply a Regression penalty of 3/2/1 percent.

Increases the Efficiency of your Items by 15/20/25 percent.
Streetwise extends its effect to all other Survivors within 8 metres of your location and lingers for 15 seconds.

After repairing Generators for a total of 70/60/50 percent, Flashbang activates:

Enter a Locker while empty-handed and press the Ability button to craft a Flash Grenade.
The Flashbang is left behind when escaping the Trial.