When a PC marks their last stress box, they suffer a level of trauma in addition to a completion. When you take trauma, circle one of your trauma conditions like Cold, Reckless, Unstable, etc.

When you suffer trauma, you’re taken out of action. You’re left for dead or otherwise dropped out of the current conflict, only to come back later, shaken and drained. When you return, you have 0 stress and are no longer exhausted (if you were previously)

Trauma conditions are permanent. Your character acquires the new personality quirk indicated by the condition, and can earn xp by using it to cause trouble. When you mark your fourth trauma condition, your character cannot continue as a protagonist. You must retire them to a different life. see Retirement

• cold: You’re not moved by emotional appeals or social bonds.
• haunted: You’re often lost in reverie, reliving past horrors, seeing things from your past or that others may not see.
• obsessed: You’re enthralled by one thing: an activity, a person, a goal, an ideology.
• paranoid: You imagine danger everywhere; you can’t trust others.
• reckless : You have little regard for your own safety, best interests, or well-being.
• soft: You lose your edge; you become sentimental, passive, gentle.
• unstable: Your emotional state is volatile. You can instantly rage, fall into despair, act impulsively, or freeze up.
• vicious: You seek out opportunities to hurt people, even for no good reason.

You can play your trauma conditions as much or as little as you like. They can totally transform your character’s persona or have only a small impact—it’s up to you. If you do play them strongly, though, allowing a trauma condition to complicate your character’s life, you earn xp for it.