Control the virus and infect the enemy ships to defeat them. Use the directional keys to control the virus and your ship. When you are out of a host, you can enter any ship by infecting. Hit the A key to fire any weapon available on the ship. To self destruct, press the S key. Infect new ships by just touching them when you are outside a host ship. Your energy will keep decreasing when leave a host and it ill greatly be reduced if your ship destroys or you self destruct. Defeat the boss at the end to complete the challenge.
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