I just died in HC! Need help @ Character Analysis

level 71 hardcore ground & pounder here. same points, better build imo:
http://www.pathofexile.com/passive-skill-tree/AAAAAgEAAnEEsxQgFE0ZLho4J-0pLjrYPfxN2FBHUFBUSVcNWGNZ818_cql8uHzZgW-MdozPkFWePJ7NogCnMKeEqWisqrndwBrG2NIh1I_ZYedS7DjvDvAf8i_2SPe-

try to have all resistances above 50 at a bare minimum. if you're playing safe, just farm until you can accomplish this. without unwavering stance, sweep is a dangerous aoe skill since it's most effective when you're surrounded by mobs.

just a few things to think about.