Whirling Frenzy
Vrecknidj, and if you drank a vial of fleet foot (Arms & Equipment)...
Sorry, it took so long to get back to you, TheEvil.
WF grants +4 to str, +2 dodge to reflex and AC and an optional additional attack at full attack bonus with a -2 to all attacks. It increases the strength and dodge bonus same as the normal rage, and grants evasion instead of indomitable will.
It says nothing about having to use a full attack, but you really should only use it then. Maybe that's been errated, but it's common sense. TWF and haste can't do that.