Blast through all the hornets and grab the missle upgrade. There is nothing after that, but if you did venture pass the upgrade. Theres a chance you've might of fallen through some tiles that looked solid. If you get into a position where your health is draining, you can't curl up or move
and it looks like all hope is lost. There is one last thing to try, hold down the fire button and walk. You should be able to get out of it, now head back. Bomb the breakable
tiles on the ground and fall though.
Enter through the door for a room full of screw attack fun. A whole bunch of cells have gathered near the entrance, take them out for some easy health and missles. Next are groups of jumpers, they shouldn't give you any trouble.
After the second and before the third purple column
is a secret tunnel that can be accessed by blowing up a tile. This tunnel will get you to the otherside of that gray column.
Enter through the
door and you will see a health upgrade. It may have grab me written all over it, but there is a secret tunnel that will make you fall short of collecting it.
It is located on the third block from the health upgrade, jump over it or fall. Once you have collected it, your health will refill and thats it. Thats because you have already maximized your health. If you did fall and have most of your health left, you are okay. If you did get the upgrade, fall and join the party.
