To get 60 missles and 99 health go into your ship and roll left to right until you hit both walls once if you did that correctly you should have 60 missles and full health.

Boss Tactics

You know those little energy tanks you find lying around? You might want to hang on to those - all 7 of them - for the end boss, the queen. Shoot her in the mouth, when it's open, roll inside her mouth and when she retracts her head roll inside her stomach. Plant 3 bombs here. It takes 15 bombs to kill her, and doing this takes a lot of energy which is why you'll need the tanks.

Invincibility

When you start the game roll ten times back and forth stand up and do a flip in the air and you will have invicibility.