Each value is only attainable by devoting all of your equipment to that particular attribute or statistic. * Not all maximum values can be achieved at once.For instance, a level 30 Barbarian will do double damage on 30% of his hits. Barbarians (and Warriors) gain 1% chance of critical strike (double damage) per Clvl.
There is a bug however so if you click on any item in your inventory your life is restored. Afterwards his vitality is supposed to suffer a permanent penalty, however due to a bug in Hellfire, clicking on any item in his inventory will reset the vitality loss. After that time he enters a 12 second lethargy phase, when those same attributes are reduced by the same amount. This skill is a short term buff that boosts his strength, vitality, and dexterity for 12 seconds. The Hellfire Barbarian has a skill called Rage.