Make torpedoes in different columns from the top down and activate horizontal ones or pair them to get horizontal clears. It’s pretty easy to get stuck in situation where you’re clearing the same area repeatedly, so think ahead on this level because the moves go by quickly.
Start with moves up top that clear the most blocks/eggs at a time. Hopefully you can get a horizontal torpedo to clear the bricks. Always be pairing them if you can’t get one going in the right direction. You have 27 eggs to clear and 18 bricks even before you get to the bottom. The wider the swath you can clear, the better.
Clear from the middle out and top down and make a cube powerup out of blocks that don’t change. You’ll be working on making two that combine to clear the board, so don’t mess up a second in progress as you’re making the first. After the full board clearing, you’ll still need to clear some bubbles. Hold out for cube + torpedoes and you should be good. I didn’t have any luck with simpler strategies on this level.
You have 48 clears to make in 30 moves. Usually, with bubbles, that isn’t too bad, but on this level, the shape of the board makes the singles on the edge harder to clear. Don’t worry too much about the eggs. Make sure you make each move clear as many bubbles as possible. Even with that you’ll still need some luck to get through.
You’re likely going to have to make a couple of moves to position like-colored blocks next to bricks to clear them. Once you clear a few blocks (hopefully up higher), you should be able to get some power-ups. Clear torpedo-making block combos above the toys on the chance that you’ll get a vertical one that will clear the toy. Otherwise, torpedo-torpedo or torpedo-TNT combos will help clear a pathway for the toys.