Warlock fight nodes in eternity of pain not working right

With a guaranteed critical and activating Special Attacks, 0 damage is dealt.

Comments

You need to remove his armor first

With a guaranteed critical and activating Special Attacks, 0 damage is dealt.

warlock prevents crits on specials while he has an armor up

You need to remove his armor first

nowhere in the nodes does it indicate the armor.

You need to remove his armor first
nowhere in the nodes does it indicate the armor.

Because it’s in Warlocks abilities