Path Of The Drunken Brute

The Drunken Brute is an unpredictable ball of rage and regret.  They gain resistance to all sorts of poisons thanks to their abnormal amount of consumption.  Preferring to wade into battle with fury in their eyes and ale in their gut.

Iron Gut

Beginning at level 3 when you choose this subclass you gain resistance to poison and advantage on saving throws against being poisoned.  In addition you no longer gain disadvantage on attacks while poisoned but still suffer all other effects.

Drunken Rage

Beginning when you choose this sub-class at level 3, whenever you enter a rage while poisoned you gain temporary hit points equal to twice your barbarian level plus your constitution modifier.  In addition when you are hit with an attack that would bring your temporary hitpoints to 0 you may use a reaction to make one attack against the enemy that hit you if they are within reach.

Alcoholic Assistance

Starting when you reach level 6 whenever you become poisoned roll a d20.  On a result of 1 you gain 2 levels of exhaustion.  On a result of 2 you enter a rage that doesn't count against your total per long rest and make one attack against the closest target with whatever you are holding.  On a result of 3-10 you gain a +3 bonus to your acrobatics and athletics skill checks.  On a result of 11-15 you gain a +3 bonus to deception, intimidation, and persuasion skill checks.  On a result of 16-19 you regain hit points equal to twice your barbarian level.  On a result of 20 you gain the benefits of a long rest except for regaining your hit points and regaining uses of this feature.  You may use this feature twice per long rest.

Steel Fortitude

Beginning at level 10 you no longer suffer the negative effects of being poisoned.  In addition whenever you end a rage while poisoned you regain 3d12 plus you constitution modifier hitpoints.

Stunning breath

Starting at level 14 you may use your bonus action to attempt to sicken an opponent close to you.  They roll a constitution saving throw vs a DC equal to 8 + your proficiency modifier + your constitution modifier.  If they fail they are stunned until the end of their next turn.  If they succeed they are poisoned until the end of their next turn.