How do you beat the level Hyperion in nextwar the quest for earth

Start with one EMP near the beginning between the outer two tracks and one near the first corner between the inner two tracks. This will cause the inner track enemies to get farther away from the outer track enemies. Then put yellow (splash damage) towers in the center where they can fire on both tracks where the enemies will be slowed down and bunched up. Upgrade these as funds become available.

Then build whatever for the middle stages.

Later, put defenses near your HQ and upgrade them so that they can fire on all tracks from the center - if you built your defenses well any stragglers should be coming one-at-a-time, and your final defenses should be able to concentrate on them. Don't use the yellow towers at the end, use more direct damage.