Pathogen

As a deadly pathogen your job is to infect the host body and survive against the host's immune defenses. Dodge out of the way of incoming antibodies and white blood cells.

Over time you will charge up your shield meter and become invulnerable to one enemy hit. Also if you hover over infected cells long enough you will speed up the infection of other organs and gain a life back. This will take careful timing on your part.

Survive for as long as you can, the difficulty will increase over time. How long can you survive?