[ Wow. Okay, so that doesn't work. He needs to think of something with more power, and for that he needs to get space between them again, some room and-- Agh.

It's very barely that he manages to reach his hand backwards and make the wall cave behind him, and he can't say he really knows how he did it except that he can tell that if he lets Karl get in too much of a hit he's likely done for. It was instinctual. As is holding out a hand to try and force Karl away again. ]