These are the pages with the allowed classes. Under each class is a list of the approved archetypes and abilities (Rage Powers, Rogue Talents, etc). Make sure to read up on your class first, as certain things may have changed.
Brawler – All Archetypes allowed
Fighter – All Archetypes except guns allowed.
Gunslinger – Only Bolt Ace allowed.
Swashbuckler – All Archetypes except guns allowed.