I do not remember how i used to play with the skills exactly.But scoundrel boosts crit multiplier in anything.You only need 5 to get the last skills in whatever tree.If you spread too much you need Memory to have all the skills.By the end of the game i used the enchants and replace a skill that gives memory with more useful ones like critical with spells.
I used the mirror a lot to adjust attributes and skills to have the best results with the abilities
Scoundrel and Warfare was good when you could backstab with a knock down.Other than that you dont need warfare to boost your physical damage to play as dual scoundrel
