Barbarian bonus points: Basically all the skills of the barbarian are used, with a cap of level 25. The most comfortable one in the early stage is Bleeding Thorns, not one of them.
Basic Skinning - Core Flying Sand or Cutting - Defense Challenge - Weapon Mastery Splitting - Ultimate Steel Vortex or Ancestral Summoning, adding blood thorn defense to each branch point, basically no-brainer push to take down the boss skill.
In addition, what I have experienced so far is that this game is not bad, and it is Diablo 3 with upgraded graphics.
If you use a life-saving Skin of Steel in defense, it will be useless if you don't use it in combat. No bleeding on the brain is enough.
