I have a decent build (dual-wielding) and I have 6+ in dual wielding, and I believe 6+ in whirlwind and I've one-shot 3 monsters at once sometimes.

Problem is that ranged wankers, mostly magic based, is killing me.

Although it seems that some monsters are harder to kill (summon masters?). Does curse help? I've noticed my stats when it's on me and it really hurts my stats.