If you utilize the Grab and Smash power does the damage dealt from breaking walls get treated as one attack or does each broken panel act as one individual damage.

Here is the way the special power reads..

GRAB AND SMASH: Kuurth breaks away automatically. When Kuurth is given an action to use Charge, he can use the Carry ability to carry an opposing character as if it were a friendly character. When he does, after actions resolve, deal damage to the carried character equal to the total number of walls and squares of blocking terrain destroyed during that action, maximum 4.

It says "after actions resolve", so you would charge, do the close combat attack granted by charge, then apply the total damage, for each wall broken, to the character that was carried.

So you get to make a close combat attack AND carry them? Do you have to roll to carry them? I just recently got this piece and I suppose the guy that explained this power to me didnt understand it to well himself.

No roll needed to carry figures. You move and carry then attack. Then they take the wall damage. Remember you can't carry Fliers, duos, and giants!

Or characters with battle fury!