Bound by Flame - How to beat final boss on Captain difficulty

So here's the easy way I found to beat the final boss on Captain difficulty, just spam arrows and dodge his attacks. The skill to move during combat from the ranger tree (a tier 1 skill that requires a mere 1 point investment) is extremely useful, although I also beat the boss easily using this method on my warrior on Captain without this skill. The feat for bonus bow damage makes things much faster, as does making sure you've equipped the best bow you have and upgraded it for bonus damage. Other than that just keep your distance and spam those arrows, I beat him first try on Captain using this method.