I basically made a series of long pixel width lines of bcln surrounded by bray. Then, in between, I added absolute zero pump. After that, I added the second line of defense, which protects against all bombs, so long as pump is effective. (Pressure is bclns worst night mare) Many bombs can damage it, but the point is to destroy it completely. (Add enough sing and it will, but most everything else will either never break it, or take forever to break it.)

The barrier idea is contained and multiplied bomb explosions, which do eliminate everything, including sing. Sing is able to mess it up because of it's pressure eventually.

Check it out!