I use Fenris armor in Mistlands, which is light armor. I tried the new carapice armor which is very tanky, but moving slowly in mistlands is painful with all the verticality and need to constantly jump. If you can consistently parry attacks, then I think what armor you take is less of an issue. The porcupine mace with a buckler shield and fire resist pots for a certain enemy is what I used to get started in mistlands.