Well with the plethora of questions going around about construct, I have my own. Sorry if it's already been asked. If your character, who has the feat Unstoppable on him, is adjacent to 1 piece of construct. Can he not move and destroy one piece of blocking terrain? Now I know that to move a roll to break must be made, so what if he moved next to it during the turn, and he did not start next to it? Now I know barrier/construct ends at the beginning of your next turn, if you played it, so it would all vanish anyway, but I was just wondering if this could be a possible exploit? Thanks for hearing me out guys. Ice

If the Unstoppable character starts adjacent to the Construct, he must roll to break away. If he can't break away, he can't move and also cannot destroy any blocking terrain.

Construct only ties you up if you begin adjacent to it. So if you become adjacent to it during your movement, you would not have to stop. In this instance an Unstoppable character would be able to destroy 1 space of Construct. I guess it is a loophole, but then again, there are many ways to destroy blocking terrain. If it's no longer blocking, adjacent characters would not have to break away.