You become obsessed with one Survivor.
Your Obsession gains a 33% action speed bonus to unhooking and healing other Survivors.
Each time you hook a Survivor other than the Obsession, if the Obsession is alive, gain a token.
If the Obsession is alive, all Survivors who are not the Obsession get 2/2.5/3% penalty to repair, healing and sabotage speeds for each token.