Launch the ball four clicks to the left. It should bounce off the left wall and into the horizontal channel, dislodging the first capsule. Be prepared for the ball as it bounces left and out of the channel. Keep trying to redirect the ball up to the top of the level by ricocheting it off the left wall and into the horizontal channel.
Make sure you know how to escape if the unbreakable bricks descend all the way.
If you get the Gun, destroy the three leftmost unbreakable bricks from the bottom row — the ones directly above the word “brickbreaker” in this diagram. This makes it easier to guide the ball to the top of the level.
This is another one of the few levels where I find the Bomb useful — it can instantly clear out one of the multi-hit bricks from the top of the board.