Use your mouse to draw boxes and destroy your enemies as they creep towards the eye. If an enemy reaches the eye, it takes damage. Grab powerups in the same manner you destroy attackers.
Iconien Game Comments
Summary: Save the eye from the oncoming horde of attackers! Hints: If you've got tons of enemies coming in all at once, sometimes it's best to make a box of the entire screen and sacrifice one hit on your eye to destroy them all at once.