Mutilate Brinstar!
This is just a cool tip to use on the "Brinstar" Stage. The level consists of the three small platforms and the main bottom ground. There are some sort of tentacle creatures holding the two side platforms to the main bottom ground. If you attack these repeatedly, they will eventually break, allowing the platforms to swing upwards. Also, one the main bottom ground, about three fifths of the way across, there is a cluster of some sort of organism. If these are attacked, they will eventually dissapear and the Ground will split apart. Note: Both these effects wear off and the creatures regenerate after a while.