That was the only problem that I could see. I think you're good.

One more important clarification.

That GL needs to have 3+ damage.

otherwise he isn't allowed to target the barrier.

Does it have to be base 3 damage, or do my 3 enhancers/rce/SHIELD TA options not help out at all?

This is incorrect. nothing says that u must do 3 damage before you can target an object/wall/barrier. it says u must deal 3 damage to destroy it.
If you have 2 damage u can roll to crit hit for 3 damage.

RCE does not work against anything other than figures. (its in the power)
shield and enhancers will allow you to destroy the walls.

...not to mention that you are using Running Shot which won't allow RCE.

I was really just going for the overkill effect.

Another question, more of a Copcicle question than Construct, but here goes:

If Icicle uses Copcicle and is Compelled to use Copcicle again, can he extend the Barrier to give up to 6 people action tokens, or can only 2 sets of 2 get the tokens as if 2 different Icicles did the action?

It doesn't say anything like "when 3 of the 4" or even "this turn". True, in the normal case those words would not need to be included, but in the case of Compel what happens?

IIRC, they were ruled to be independent. I'd need to search to comfirm.

I was under the impression you dont roll when attacking a wall/blocking terrain, you just hit automatically. so no chance for a critical hit.

oh and if it doesn't have to be the same use of copsicles, then icicle could potentially get 12 guys in 2 actions when compelled

eeeeeIeeeee
cccccccccc
ccvvuuvvcc
cBBBBBBBBc
ccvvuuvvcc

e=elevated
c=clear
I=Icicle
v & u=enemy piece
B=Barrier (Copsicle)
if they are seperate he only gets up to 8 (the v's)

yeah that situation wont ever come up. but anyway.

You don't HAVE to roll, but have the option to make a roll to try for a critical hit for extra damage.

(Heck, if you ever found yourself in a situation where you have Destiny next to a wall and both you and your opponent played Ground Zero, you could try to roll and get a critical hit and then both GZ rolls.)

I was under the impression that you did have to roll just in case you crit missed...

no you do not have to roll if you do enough damage. But if you are below the needed damage then u can roll to try to crit hit for the extra damage.

No. The attack automatically succeeds.

Page 11: "When a character attacks blocking terrain, the attack automatically succeeds."