Battle Engineer enhancements

(info on enhancement tree here)

Tier One
Requires Artificer level 1

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

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

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

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