Go into the big room which basically connects to the morphball, missles, and bombs. Now go all the way to the bottom of this vertically scrolling room and go to the right door. Jump onto the top level, and turn into a morphball. Start to go across. If you fall through the blocks, go through the door and try again, whether you fall through or not seems random. If you do manage to make it across this, you'll see a single solid block with a pillar closing on it. Stop the morphball at the left edge. Now wait a few seconds, and go right again over this short series of falling blocks. If you make it past the easiest 2nd pillar, you can just fall through. You now have access to a Super Missle, a Reserve Tank, and 2 Missles.
Submitted by: Thor