Most breakable walls in this game can only be destroyed from one side but it is possible to break them from the wrong side by using certain skills.
Hammer
If you stick to the wall and use hammer you will be able to break small walls, this does not work on the bigger barriers.
You can hit the barrier more consistently if you combine it with slowdown.
Shuriken
If you stick to the wall and use shuriken, some of them will pass through the wall and start damaging it. Repeat it a couple times and you will break the wall.
Sentry
If you stick at the top of the wall and use Sentry, it will move at a position where it can deals damage to the wall. Repeat it enough time and you will break the wall. (video coming soon)