Instructions
Maneuver the Ray character to the left side of the screen next to the lower left corner. Maneuver the Egon character to the right side of the screen next to the lower right corner.
Position the Winston and Peter characters near the center of the screen, closer to the middle than to either the top or bottom. Select the "wand" weapon for each character. Fire the weapons at the floating orbs and the ghosts as they appear to reduce their numbers on-screen.
Stop firing at the orbs and ghosts when there are still a number of them on-screen. Let the orbs and ghosts attack the Winston and Peter characters until both have fallen down on the floor.
Maneuver the Ray and Egon characters over to the devices in the corners of the room that they are near. Activate the devices in the corners, using the controls on the screen, to finish the level and unlock the door so that everyone that is still "alive" can exit.