Level 154 is not that hard but may require a bit of luck. There are two pre-set warhead power-ups here: the first one is hidden in the crate in the bottom part, the other one is under the earth tile in the top part of the game field. It’s rather easy to get to these power-ups. Activate them, and they will clear out a large space for you to make matches and clear the goal tiles. The most important thing is to clear the middle of the game field as soon as possible. After that, it will be much easier to make bombs and other power-ups.
Also, don’t forget that this is a timed level so don’t waste any of the precious seconds waiting for the pieces to fall down after a match. You can always play in a different part of the field while waiting.