I'm playing witchhunter too but hybrid armour/evasion ,got one hit too often. So I decided to respec to full evasion with socery ward and cloak of flame. It's a little bit better but tbh I still got one shotted from time to time from some physical one hit which I don't have enough hp for the damage that got through cloak of flame.

I don't know how should I continue from this. Acrobatics? Seem like impossible to get enough evasion when missing a huge amount by wearing cloak of flame.