Infestation is a challenge. The goal is to destroy as many enemy units and structures in the allotted time using infestors and roaches. Use the infestors' Neural Parasite to control powerful enemy units; in this challenge Neural Parasite is permanent and the enemy will not attack controlled units. Turn the controlled units against clusters of marines and other nearby units. The roaches may mop up survivors using hit-and-run attacks; burrow wounded roaches to quickly regenerate health. They may also divert attention from infestors applying Neural Parasite.