You just have to time it right so you parry 3 attacks from bosses before you blast.
Show me someone as skilled as him in NA/EU and talk. Most of the Karoks I see here (not all) are busy running around and not using their implemented blocks in their attacks to deal damage.
for Effortless classes, Arisha and Delia. They are the easiest classes with the easiest dodge + block combos. The hardest class would be one of the classes that doesn't have a block , and only a dodge, like Xgun kai. I played all the characters and all of them are fairly straight forwards, but I must admit it is harder to dodge hits with an Kai than it is with a Arisha or Delia, especially in neamhain. And recently I tried staff evie, and she is quite difficult too in my opinion. Staff Evie looks easy when others play her but if you tried to play her yourself, you'd show more appreciation the next time you ask for coronas