The best way to deal with a Zhin trying to kill you is to play your deck with full life steal and use Jenos Luminary Legendary Card, this will get you a lot more of damage to make him use his billow and counter early, and you'll win 4/5 times
Ash is super annoying to deal with. Her damage output is surprisingly high for a tank, but only at close range(unless they have slug shot). pick her off from a distance if at all possible. if not then wait for backup, you Will need it.