[quote=@Blu]
Ding! Ding! Ding! [@Zendrelax] You've hit it's weakness! Double the damage and the boss is now down. All-Out Attack? I vote yes.

EDIT: Actually, can anyone answer this cause I can't remember: does performing an All-Out Attack mean that others can't have their turns?
[/quote]

It's an Extra Action essentially.  You still get turns