Training and role
Getting in and getting out
The guild operates within the cities whose property it targets. Its members have clients, debts and rivals as well as victims. An experienced thief may know a roofline or a delivery schedule better than a street name; that knowledge comes from work, not an assurance that every attempt will succeed.
Surprise attacks, poisons and escape skills support brief encounters. Larceny and traps extend the class beyond fighting. Long brawls leave less room to use the preparation that distinguishes the trade.
Traceability and Scrutiny can rise through crime and discovery. Disguises and other tools have specific limits; choosing the class does not make a character unidentifiable.