We know that snakeblood will offer some mitigation, so get that going, and if worst comes to worst, nail them with a slow/drain stamina poison, pop a speed potion and bug out!
I personally am a heavy poison user on my characters - and i think they do not need any boost in effectiveness. the only thing i might suggest is to replace snakeblood passive (the reduce negative eff
Jesus christ people, OP never said that Snakeblood Passive had to counter it 100%, but rather that it would be a counter. Blocking is a counter to heavy attacks, but it still doesn't mitigate 100% of