Feeling overwhelmed?
For an easy way to destroy every enemy on the screen, simply press the eject button on your Sega CD. This causes the background and enemies to stop, but still allows you to move your craft and fire.
After you have destroyed all of the frozen enemies close the disc drive. The game will then continue on normally.
Enter these like normal.
Level 1 Vein, Heart, Bottle, Head, Bone, Boln, Bone, Syringe, Head, Bottle, Portal, Bottle, Bone, Syringe, Bottle
Level 2 Chase Syringe, Heart, Bottle, Head