Seriously, Way of the Warrior at rank 5 on level 6 IS overpowered. From there it's almost like you wouldn't need anything else for the rest of the game because you've got it all, right there, right now.
Overpowered Arrow Spray apart, going brainless warrior spending all Ability Points on WotW with LW is probably the single most unbalanced thing you can do. Even worse should you use TWO of those powerhouses. No healing, huh? Well who needs healing when nothing can stand in your way ?
No - REALLY - Lone Wolf is an overpowered talent. It's actually better to level one character quickly than two characters slowly.
What's more 80% of additional vitality with a warrior can be more than 100% vitality of a mage. Want Element effects/damage ? Get scrolls. Or forget about them : rush / battering ram / phoenix dive your way to victory.
Fights are quick, especially since there will be one ( or two ) less participant(s).
It doesn't take any arguments to prove this point. It only takes doing a full game with Lone Wolf on at least one guy, maybe two.
And don't bring an Angry Joe to the table if you want to sound serious, bring a TotalBiscuit.
Everything up to burning skeleton folks is easy mode, unless you got a ton of fire resistance potions, which also can be overused.
Rain spell ... ? Any Water spell really ?