Wall Walkers

[Cetaurefie]

So I'm trying to get NM gear for myself and a friend of mine who just started playing DD, and I jump to alc labs, use the same set up I've used since I first succeeded NM alc labs and now, for some reason :coughtrendycough: Goblins, Archers, and Ogres just walk right through my walls/around my walls. So in response to this I put up a second wall, making the whole barricade wider, and they are still doing it! I can no longer beat it with my app because they are going through/around my walls.

WTF :demon: