breakig stone wall are simple all you have to do is get yellow pikmin and make them pik up the bomb rocks.

White bramble wall: This one is very easy. One bomb-rock will destroy it. Black bramble wall: It looks omnious, but this also easy wall takes a simple four bomb-rocks! White stone wall: this one is pie. Take three yellows and throw them at the wall. Gray stone wall: Six bomb-rocks. Black stone wall: a whopping twelve bomb-rocks!