At the end of the session, you may level up if you have at least twice as many XP as your level. If you don't, you get 1XP. After you level up, reset your XP to 0.
When you Level Up, choose 1:
- Learn a new Specialization;
- Increase an Approach by 1;
- Treat a Scar.
Also, roll 1d20. If you roll below half of your levels rounded down, you may add a new Unique Trait.