Tiny Pickles wants to eat eyeballs that are put in the jars, which is why you are going to save them by shooting pickles at the jar, breaking the glass, and freeing the eyeballs. Watch out, because if the mermaid eats too many of the eyeballs, you lose and have to start all over again. The bomb is good, since it explodes multiple jars at once, and the grandma slows them down, making for more precise aim.