Astral Combat Options

[Veggiesama]

Okay, so Dual Natured and Astrally Perceiving (aka "AR of the Astral World") characters are able to attack physical beings normally with physical attacks. Astrally Projecting characters are unable to affect physical beings (hope I'm right so far).

All three of them can fight wholey astral entities by rolling Astral Combat + Willpower. What does their target roll in the opposed test? Normally it's Reaction+Dodge for melee, and the Astral equivalent of Reaction is Intuition. So do they roll Intuition+Dodge or just Intuition? Can they go Full Defense?

Okay, so the damage is specified on that table for each different type of astral entity, and I'd assume every net hit on the previous test adds to this. Damage resistance rolls are normally Body + Armor. Body would become Willpower, correct? I doubt it, but is Armor added to the roll? What about magical armor spells? Does armor penetration from weapon foci apply? If the modified DV is greater than the modified armor value, can the attack only deal stun (as opposed to giving the attacker a choice between stun or physical)?

After the damage resistance check, is there a chance of astral knockdown? :P (is it even possible to be "prone" in the astral plane?)