Frenzied Berserker enhancements

(info on enhancement tree here)

Tier One
Requires Barbarian level 1

Tier Two
Requires Barbarian Level 2, 5 APs spent in tree

Tier Three
Requires Barbarian Level 3, 10 APs spent in tree

Tier Four
Requires Barbarian Level 4, 20 APs spent in tree

Tier Five
Requires Barbarian Level 5, 40 APs spent in tree