The important thing to remember on this level is patience. Start the ball off one click to the right, and when the ball bounces off the lowest row of unbreakable bricks, hit a slightly angled shot toward the top right corner of the board. Hopefully this will bounce back down and left and destroy the single brick with no capsule.
Keep playing conservatively until you have a shot at reaching the two bricks at the top of the level. It’s possible to reach these two bricks by knocking some sharply angled shots off the side walls, but this is risky. Instead, I prefer to wait until the bricks start descending. This provides a larger opening to shoot into and reduces your chances for error.
If you get the Gun, you have two options. The first is to destroy the three unbreakable bricks from the lowermost row. This is especially helpful if you’ve already cleared out the single brick sitting directly above, because it means the whole center of the level is clear. The other option is to destroy the unbreakable bricks touching right and left walls — the ones directly under the bricks with capsules. This give you an opening to destroy these capsules from beneath.