The Nature of Roles
Roles are intentionally flexible. "Warrior" doesn't mean "sword-wielding knight" - it means "someone who solves problems through skilled violence." Your Warrior might be a scarred tavern brawler, a foppish but deadly duelist, or a roaring naked berserker with an axe. The Role provides the mechanical framework; you provide the specific expression.
This flexibility serves both narrative and mechanical purposes. Narratively, it lets you build exactly the character concept you want without being forced into preset packages. Mechanically, it means Roles can combine in unexpected ways to create unique or standard archetypes.
Yes, pun intended, but the point remains. Most any standard character types from another system can be created here using the standard Roles and a little creative presentation.
They are also intentionally limited. Roles are not labels that hand you a list of different abilities; a Role does one thing. Warriors brawl. Snipers shoot. Sneaks...sneak. There's a lot going on there, though; a warrior can usefully pick up any common weapon and use it effectively - or a chair, for that matter. It doesn't make them an expert with any particular weapon, but keep reading!