rumblealex wrote:For any bosses it's recommended to use twisted claw instead of harbinger. Anytime you are 1vs1 it's preferable over harbinger.
Do you have any mercenary? Most guides suggest an Act3 bloodmage for early gameplay since they can heal themselves and you to full life, and can output a lot of damage with +fire spell dmg gear like fascinating shrine crafted sacred.
As for killing Diablo on Destruction, dance around him to avoid his attacks, harbinger on top of him then use 1 mana pulse and use twisted claw a few times. Walk back, kite him away if there are too many red orbs. Resurrect your mercenary if he dies. Your gear should be more than sufficient to get him down. Werewolf druid is fragile though so it's important to not stand in front of him and tank his abilities. Hit him quickly then dance around.
Thank you for your advice. Now in act 5 and even ordinary monsters can kill with a couple of blows. Catastrophically there is no damage...