well, if you want a quick archetype list:
Legacy: support/buff, damage control
Tachyon: buildup/ping damage, damage control
Wraith: literally everything
Bunker: tank, low consistent damage/buildup (omni-cannon)
AZ: berzerker/ALL THE DAMAGE
Tempest: crowd control, damage, some healing
Unity: lots of damage here too. some alternate effects, but not many
Fanatic: crash-and-burn (takes and deals damage; loses health to do more damage)
Ra: ALL THE DAMAGE
Visionary: support (control, as opposed to buff)
Haka: tank, low consistent damage with some really strong attacks here and there.
Scholar: tank, heal, damage, support (pretty complex, though)
Mr. Fixer: support (cover fire, crowd control, damage control, punches through shields, etc.)
ExPatriette: ALL THE DAMAGE
Argent Adept: ALL THE SUPPORT
Nightmist: see Wraith
Chrono-Trigger: damage, some damage-related support
Omnitronks: utilitarian; combine Tachyon (plays lots of cards) with Bunker (tanky, automatic attacks), with some slight elements from Tempest (crowd control, healing).