Troll Slayer Skill "Ferocious Charge"

Does this skill double the attack number or just the A characteristic of the warrior? The text would make you assume its the calculated attack number (including +1A for dual wielding etc).

Its the whole kit and caboodle ie.. all attacks including those from dual wielding

Are you sure about this? or does it work like Frenzy does?

No, that is not correct. You double your attack characteristic and then add one for dual wielding. Here is the quote from the rulebook page 19:
"A warrior armed with two one-handed weapons may make 1 extra Attack with the additional weapon. Note that this is added to the total of the warrior’s attacks after other modifiers, such as frenzy, have been applied."

Ops guess Ive been playing this Wrong then myself Ty for correcting me