when determining damage...with multiple targets...does it all happen at once or resolve seperately

say the formation Im targeting is this:

XX
O

I hit XX with energy explosion and 2 arrows, and O has toughness, does he take 0 damage or 1 Damage

and also...same scenario.....but I have Armor Piercing on...does 0 take 2 damage or just 1

It's all factored in at the same time, so your fig with Toughness takes one click in both cases.

All damage is dealt at once, therefore for your question O will be dealt 2 damage, but since toughness reduces damage by 1, O is dealt 1 damage.

Since Armor Piercing states damage dealt by this character may not be reduced below 1, and since O would be dealt 1 damage even after toughness for the above example, Armor Piercing won't effect the result, so O is dealt 1 damage.

All damage is dealt at once.

So, in your example, O would be dealt 2 damage, reduced to 1 by Toughness: O takes 1 damage.

Same thing with Armor Piercing.

But let's take the same example, and say O has Invulnerability instead of Toughness: he'd still be dealt 2 damage, which should be reduced to 0 by Invulnerability, but because of AP, it is only reduced to 1: O takes 1 damage.

EDIT: way... too... slow...

thanks chums.........just getting some info :]