[@Skythikon] In the words of the Great Man himself... Or the GM at least:

[quote=@Dragonite777]
Choose two to have speciality in. Everything else you are assumed have basic knowledge/training in.
[/quote]

The way I understand it is that any of us could pick up a shotgun and firing it, but only a Master would be able to pick up a shotgun and clear an entire room of enemies while not touching any of their allies within sixty seconds, or some such miraculous stunt. :)

We could all sneak down a corridor and avoid guards, but a Master at Stealth would be able to walk in front of the guard, steal a pistol from his holster and shoot the guy in the head with it without his partner noticing. XD